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  <xs:element name="SalesOfLicensedProductsPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_SalesOfLicensedProductsPercentage"/>
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  <xs:element name="SecuritiesReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="silo_SecuritiesReceived"/>
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  <xs:element name="UpfrontLicenseFees" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_UpfrontLicenseFees"/>
  <xs:element name="FirstCommercialSale" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_FirstCommercialSale"/>
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  <xs:element name="ResearchProjectEstimatePercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_ResearchProjectEstimatePercentage"/>
  <xs:element name="JointVentureInterestRate" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_JointVentureInterestRate"/>
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  <xs:element name="DrJamesKuoMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_DrJamesKuoMember"/>
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  <xs:element name="HomeBistroIncMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="silo_HomeBistroIncMember"/>
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</xs:schema>
