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<import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" />
<import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" />
<import namespace="http://fasb.org/us-gaap/2018-01-31" schemaLocation="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/invest/2013-01-31" schemaLocation="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/country/2017-01-31" schemaLocation="http://xbrl.sec.gov/country/2017/country-2017-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/currency/2017-01-31" schemaLocation="http://xbrl.sec.gov/currency/2017/currency-2017-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/exch/2018-01-31" schemaLocation="https://xbrl.sec.gov/exch/2018/exch-2018-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/naics/2017-01-31" schemaLocation="http://xbrl.sec.gov/naics/2017/naics-2017-01-31.xsd" />
<import namespace="http://xbrl.sec.gov/sic/2011-01-31" schemaLocation="http://xbrl.sec.gov/sic/2011/sic-2011-01-31.xsd" />
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<element name="CollaborativeAndLicenseArrangementDisclosureTextBlock" type="nonnum:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="asmb_CollaborativeAndLicenseArrangementDisclosureTextBlock" substitutionGroup="xbrli:item" />
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<element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureRate" type="num:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="asmb_ShareBasedCompensationArrangementByShareBasedPaymentAwardForfeitureRate" substitutionGroup="xbrli:item" />
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<element name="PublicOfferingMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="asmb_PublicOfferingMember" substitutionGroup="xbrli:item" />
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<element name="MaximumNumberOfCommonStockToBeIssuedPerOffering" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" id="asmb_MaximumNumberOfCommonStockToBeIssuedPerOffering" substitutionGroup="xbrli:item" />
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<element name="AllerganPharmaceuticalsInternationalLimitedMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="asmb_AllerganPharmaceuticalsInternationalLimitedMember" substitutionGroup="xbrli:item" />
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<element name="IndianaUniversityResearchAndTechnologyCorporationMember" type="nonnum:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" id="asmb_IndianaUniversityResearchAndTechnologyCorporationMember" substitutionGroup="xbrli:item" />
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