<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!--XBRL Document Created with XBRLMaster-->
<!--Version: 2.3.08-->
<!--Based on XBRL 2.1-->
<!--Date of creation: 03/28/2022-->
<!--Software architectural design and coding: A'c Dharmapremananda Avt.-->
<!--Copyright (c) 2022 I-NET Business Solutions, Inc. All Rights Reserved.-->
<link:linkbase xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://tenx.com/role/Cover" xlink:href="tenx-20211231.xsd#Cover" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CondensedConsolidatedBalanceSheets" xlink:href="tenx-20211231.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:href="tenx-20211231.xsd#CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CondensedConsolidatedStatementsOfComprehensiveLoss" xlink:href="tenx-20211231.xsd#CondensedConsolidatedStatementsOfComprehensiveLoss" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CondensedConsolidatedStatementsOfStockholdersEquity" xlink:href="tenx-20211231.xsd#CondensedConsolidatedStatementsOfStockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="tenx-20211231.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/DescriptionOfBusiness" xlink:href="tenx-20211231.xsd#DescriptionOfBusiness" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPolicies" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/BalanceSheetComponents" xlink:href="tenx-20211231.xsd#BalanceSheetComponents" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/NotesPayable" xlink:href="tenx-20211231.xsd#NotesPayable" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/MERGER" xlink:href="tenx-20211231.xsd#MERGER" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquity" xlink:href="tenx-20211231.xsd#StockholdersEquity" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/KBenefitPlan" xlink:href="tenx-20211231.xsd#KBenefitPlan" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CommitmentsAndContingencies" xlink:href="tenx-20211231.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/IncomeTaxes" xlink:href="tenx-20211231.xsd#IncomeTaxes" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SubsequentEvents" xlink:href="tenx-20211231.xsd#SubsequentEvents" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPoliciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/BalanceSheetComponentsTables" xlink:href="tenx-20211231.xsd#BalanceSheetComponentsTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/MergerTables" xlink:href="tenx-20211231.xsd#MergerTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityTables" xlink:href="tenx-20211231.xsd#StockholdersEquityTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CommitmentsAndContingenciesTables" xlink:href="tenx-20211231.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/IncomeTaxesTables" xlink:href="tenx-20211231.xsd#IncomeTaxesTables" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/DescriptionOfBusinessDetailsNarrative" xlink:href="tenx-20211231.xsd#DescriptionOfBusinessDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPoliciesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetails2" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPoliciesDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:href="tenx-20211231.xsd#SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/BalanceSheetComponentsDetails" xlink:href="tenx-20211231.xsd#BalanceSheetComponentsDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/BalanceSheetComponentsDetailsNarrative" xlink:href="tenx-20211231.xsd#BalanceSheetComponentsDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/NotesPayableDetailsNarrative" xlink:href="tenx-20211231.xsd#NotesPayableDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/MergerDetails" xlink:href="tenx-20211231.xsd#MergerDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/MergerDetailsNarrative" xlink:href="tenx-20211231.xsd#MergerDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails1" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails2" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails2" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails3" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails3" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails4" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails4" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails5" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails5" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetails6" xlink:href="tenx-20211231.xsd#StockholdersEquityDetails6" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/StockholdersEquityDetailsNarrative" xlink:href="tenx-20211231.xsd#StockholdersEquityDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CommitmentsAndContingenciesDetails" xlink:href="tenx-20211231.xsd#CommitmentsAndContingenciesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CommitmentsAndContingenciesDetails1" xlink:href="tenx-20211231.xsd#CommitmentsAndContingenciesDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/CommitmentsAndContingenciesDetailsNarrative" xlink:href="tenx-20211231.xsd#CommitmentsAndContingenciesDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/KBenefitPlanDetailsNarrative" xlink:href="tenx-20211231.xsd#KBenefitPlanDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/IncomeTaxesDetails" xlink:href="tenx-20211231.xsd#IncomeTaxesDetails" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/IncomeTaxesDetails1" xlink:href="tenx-20211231.xsd#IncomeTaxesDetails1" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/IncomeTaxesDetailsNarrative" xlink:href="tenx-20211231.xsd#IncomeTaxesDetailsNarrative" xlink:type="simple" />
  <link:roleRef roleURI="http://tenx.com/role/SubsequentEventsDetailsNarrative" xlink:href="tenx-20211231.xsd#SubsequentEventsDetailsNarrative" xlink:type="simple" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/Cover" xlink:title="00000001 - Document - Document and Entity Information" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CondensedConsolidatedBalanceSheets" xlink:title="000002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaapAssetsCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="loc_us-gaapMarketableSecuritiesCurrent" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapMarketableSecuritiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="loc_us-gaapPrepaidExpenseCurrent" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapPrepaidExpenseCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssetsCurrent" xlink:to="loc_us-gaapCashAndCashEquivalentsAtCarryingValue" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaapAssets" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaapOtherAssetsNoncurrent" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOtherAssetsNoncurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaapPropertyPlantAndEquipmentNet" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapPropertyPlantAndEquipmentNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="loc_us-gaapOperatingLeaseRightOfUseAsset" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapOperatingLeaseRightOfUseAsset" xlink:type="arc" weight="1" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAssets" xlink:to="loc_us-gaapAssetsCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaapLiabilitiesCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NotesPayableCurrent" xlink:label="loc_us-gaapNotesPayableCurrent" />
    <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapNotesPayableCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
    <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaapAccountsPayableCurrent" />
    <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesCurrent" xlink:to="loc_us-gaapAccountsPayableCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="loc_us-gaapLiabilitiesNoncurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NotesPayable" xlink:label="loc_us-gaapNotesPayable" />
    <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesNoncurrent" xlink:to="loc_us-gaapNotesPayable" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityNoncurrent" />
    <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesNoncurrent" xlink:to="loc_us-gaapOperatingLeaseLiabilityNoncurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaapLiabilities" />
    <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesNoncurrent" xlink:type="arc" weight="1" />
    <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilities" xlink:to="loc_us-gaapLiabilitiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaapStockholdersEquity" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaapRetainedEarningsAccumulatedDeficit" />
    <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapRetainedEarningsAccumulatedDeficit" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaapAccumulatedOtherComprehensiveIncomeLossNetOfTax" />
    <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaapAdditionalPaidInCapital" />
    <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapAdditionalPaidInCapital" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaapPreferredStockValue" />
    <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapPreferredStockValue" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaapCommonStockValue" />
    <link:calculationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapStockholdersEquity" xlink:to="loc_us-gaapCommonStockValue" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaapLiabilitiesAndStockholdersEquity" />
    <link:calculationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapStockholdersEquity" xlink:type="arc" weight="1" />
    <link:calculationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapLiabilitiesAndStockholdersEquity" xlink:to="loc_us-gaapLiabilities" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:title="000003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CondensedConsolidatedStatementsOfComprehensiveLoss" xlink:title="000004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaapOperatingExpenses" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaapResearchAndDevelopmentExpense" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapResearchAndDevelopmentExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="loc_us-gaapSellingGeneralAndAdministrativeExpense" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingExpenses" xlink:to="loc_us-gaapSellingGeneralAndAdministrativeExpense" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaapNetIncomeLoss" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherOperatingIncomeExpenseNet" xlink:label="loc_us-gaapOtherOperatingIncomeExpenseNet" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapOtherOperatingIncomeExpenseNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_InterestIncomeExpenseNet" xlink:label="loc_us-gaapInterestIncomeExpenseNet" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapInterestIncomeExpenseNet" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaapOperatingIncomeLoss" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetIncomeLoss" xlink:to="loc_us-gaapOperatingIncomeLoss" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaapComprehensiveIncomeNetOfTax" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_MarketableSecuritiesGainLoss" xlink:label="loc_us-gaapMarketableSecuritiesGainLoss" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapComprehensiveIncomeNetOfTax" xlink:to="loc_us-gaapMarketableSecuritiesGainLoss" xlink:type="arc" weight="1" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapComprehensiveIncomeNetOfTax" xlink:to="loc_us-gaapNetIncomeLoss" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CondensedConsolidatedStatementsOfStockholdersEquity" xlink:title="000005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:title="000006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaapProfitLoss" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapProfitLoss" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_DepreciationAndAmortization" xlink:label="loc_us-gaapDepreciationAndAmortization" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapDepreciationAndAmortization" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInInterestAndDividendsReceivable" xlink:label="loc_us-gaapIncreaseDecreaseInInterestAndDividendsReceivable" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInInterestAndDividendsReceivable" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AmortizationOfLeasedAsset" xlink:label="loc_us-gaapAmortizationOfLeasedAsset" />
    <link:calculationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapAmortizationOfLeasedAsset" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" />
    <link:calculationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapGainsLossesOnExtinguishmentOfDebt" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="tenx-20211231.xsd#tenx_IssuanceAndVestingOfCompensatoryStockOptionsAndWarrants" xlink:label="loc_tenxIssuanceAndVestingOfCompensatoryStockOptionsAndWarrants" />
    <link:calculationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_tenxIssuanceAndVestingOfCompensatoryStockOptionsAndWarrants" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="tenx-20211231.xsd#tenx_IssuanceOfCommonStockAndPreferredStockForAssetAcquisition" xlink:label="loc_tenxIssuanceOfCommonStockAndPreferredStockForAssetAcquisition" />
    <link:calculationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_tenxIssuanceOfCommonStockAndPreferredStockForAssetAcquisition" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IssuanceOfStockAndWarrantsForServicesOrClaims" xlink:label="loc_us-gaapIssuanceOfStockAndWarrantsForServicesOrClaims" />
    <link:calculationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIssuanceOfStockAndWarrantsForServicesOrClaims" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="tenx-20211231.xsd#tenx_AmortizationOfPremiumOnMarketableSecurities" xlink:label="loc_tenxAmortizationOfPremiumOnMarketableSecurities" />
    <link:calculationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_tenxAmortizationOfPremiumOnMarketableSecurities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" />
    <link:calculationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInAccountsPayableAndAccruedLiabilities" />
    <link:calculationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:label="loc_us-gaapIncreaseDecreaseInOtherNoncurrentLiabilities" />
    <link:calculationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:to="loc_us-gaapIncreaseDecreaseInOtherNoncurrentLiabilities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" />
    <link:calculationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquirePropertyPlantAndEquipment" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="loc_us-gaapPaymentsToAcquireMarketableSecurities" />
    <link:calculationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_us-gaapPaymentsToAcquireMarketableSecurities" xlink:type="arc" weight="-1" />
    <link:loc xlink:type="locator" xlink:href="tenx-20211231.xsd#tenx_SaleOfMarketableSecurities" xlink:label="loc_tenxSaleOfMarketableSecurities" />
    <link:calculationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:to="loc_tenxSaleOfMarketableSecurities" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOfMediumTermNotes" xlink:label="loc_us-gaapProceedsFromIssuanceOfMediumTermNotes" />
    <link:calculationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOfMediumTermNotes" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromWarrantExercises" xlink:label="loc_us-gaapProceedsFromWarrantExercises" />
    <link:calculationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromWarrantExercises" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="loc_us-gaapProceedsFromIssuanceOrSaleOfEquity" />
    <link:calculationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:to="loc_us-gaapProceedsFromIssuanceOrSaleOfEquity" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:label="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" />
    <link:calculationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInFinancingActivities" xlink:type="arc" weight="1" />
    <link:calculationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInInvestingActivities" xlink:type="arc" weight="1" />
    <link:calculationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect" xlink:to="loc_us-gaapNetCashProvidedByUsedInOperatingActivities" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/DescriptionOfBusiness" xlink:title="000007 - Disclosure - DESCRIPTION OF BUSINESS" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPolicies" xlink:title="000008 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/BalanceSheetComponents" xlink:title="000009 - Disclosure - BALANCE SHEET COMPONENTS" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/NotesPayable" xlink:title="000010 - Disclosure - NOTES PAYABLE" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/MERGER" xlink:title="000011 - Disclosure - MERGER" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquity" xlink:title="000012 - Disclosure - STOCKHOLDERS EQUITY" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/KBenefitPlan" xlink:title="000013 - Disclosure - 401(k) BENEFIT PLAN" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CommitmentsAndContingencies" xlink:title="000014 - Disclosure - COMMITMENTS AND CONTINGENCIES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/IncomeTaxes" xlink:title="000015 - Disclosure - INCOME TAXES" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SubsequentEvents" xlink:title="000016 - Disclosure - SUBSEQUENT EVENTS" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesPolicies" xlink:title="000017 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesTables" xlink:title="000018 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/BalanceSheetComponentsTables" xlink:title="000019 - Disclosure - BALANCE SHEET COMPONENTS (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/MergerTables" xlink:title="000020 - Disclosure - MERGER (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityTables" xlink:title="000021 - Disclosure - STOCKHOLDERS' EQUITY (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CommitmentsAndContingenciesTables" xlink:title="000022 - Disclosure - COMMITMENTS AND CONTINGENCIES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/IncomeTaxesTables" xlink:title="000023 - Disclosure - INCOME TAXES (Tables)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/DescriptionOfBusinessDetailsNarrative" xlink:title="000024 - Disclosure - DESCRIPTION OF BUSINESS (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetails" xlink:title="000025 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetails2" xlink:title="000026 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 2)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SummaryOfSignificantAccountingPoliciesDetailsNarrative" xlink:title="000027 - Disclosure - SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/BalanceSheetComponentsDetails" xlink:title="000028 - Disclosure - BALANCE SHEET COMPONENTS (Details)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaapAccruedLiabilitiesCurrent" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="loc_us-gaapEmployeeRelatedLiabilitiesCurrent" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapEmployeeRelatedLiabilitiesCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityCurrent" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapOperatingLeaseLiabilityCurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="loc_us-gaapOtherAccruedLiabilitiesCurrent" />
    <link:calculationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapAccruedLiabilitiesCurrent" xlink:to="loc_us-gaapOtherAccruedLiabilitiesCurrent" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/BalanceSheetComponentsDetailsNarrative" xlink:title="000029 - Disclosure - BALANCE SHEET COMPONENTS (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/NotesPayableDetailsNarrative" xlink:title="000030 - Disclosure - NOTES PAYABLE (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/MergerDetails" xlink:title="000031 - Disclosure - MERGER (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/MergerDetailsNarrative" xlink:title="000032 - Disclosure - MERGER (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails" xlink:title="000033 - Disclosure - STOCKHOLDERS EQUITY (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails1" xlink:title="000034 - Disclosure - STOCKHOLDERS EQUITY (Details 1)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails2" xlink:title="000035 - Disclosure - STOCKHOLDERS EQUITY (Details 2)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails3" xlink:title="000036 - Disclosure - STOCKHOLDERS EQUITY (Details 3)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails4" xlink:title="000037 - Disclosure - STOCKHOLDERS EQUITY (Details 4)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails5" xlink:title="000038 - Disclosure - STOCKHOLDERS EQUITY (Details 5)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetails6" xlink:title="000039 - Disclosure - STOCKHOLDERS EQUITY (Details 6)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/StockholdersEquityDetailsNarrative" xlink:title="000040 - Disclosure - STOCKHOLDERS EQUITY (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CommitmentsAndContingenciesDetails" xlink:title="000041 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details)">
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiability" xlink:label="loc_us-gaapOperatingLeaseLiability" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityNoncurrent" />
    <link:calculationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingLeaseLiability" xlink:to="loc_us-gaapOperatingLeaseLiabilityNoncurrent" xlink:type="arc" weight="1" />
    <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2021/elts/us-gaap-2021-01-31.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="loc_us-gaapOperatingLeaseLiabilityCurrent" />
    <link:calculationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaapOperatingLeaseLiability" xlink:to="loc_us-gaapOperatingLeaseLiabilityCurrent" xlink:type="arc" weight="1" />
  </link:calculationLink>
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CommitmentsAndContingenciesDetails1" xlink:title="000042 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details 1)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/CommitmentsAndContingenciesDetailsNarrative" xlink:title="000043 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/KBenefitPlanDetailsNarrative" xlink:title="000044 - Disclosure - 401(k) BENEFIT PLAN (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/IncomeTaxesDetails" xlink:title="000045 - Disclosure - INCOME TAXES (Details)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/IncomeTaxesDetails1" xlink:title="000046 - Disclosure - INCOME TAXES (Details 1)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/IncomeTaxesDetailsNarrative" xlink:title="000047 - Disclosure - INCOME TAXES (Details Narrative)" />
  <link:calculationLink xlink:type="extended" xlink:role="http://tenx.com/role/SubsequentEventsDetailsNarrative" xlink:title="000048 - Disclosure - SUBSEQUENT EVENTS (Details Narrative)" />
</link:linkbase>
