<?xml version="1.0" encoding="UTF-8"?>
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<owl:Class rdf:about="http://purl.obolibrary.org/obo/UO_0000006">
<rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/UO_0000000"/>
<rdfs:subClassOf rdf:resource="http://purl.obolibrary.org/obo/IAO_0000003"/>
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<rdfs:label>substance unit</rdfs:label>
</owl:Class>
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</obo_purl:UO_0000006>
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</obo_purl:UO_0000006>
<obo_purl:UO_0000006 rdf:about="http://purl.obolibrary.org/obo/UO_0000042">
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<rdf:Description rdf:about="http://purl.obolibrary.org/obo/UO_1000013">
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</rdf:Description>
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<?xml version="1.0" encoding="UTF-8"?>
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<owl:Class rdf:about="http://purl.obolibrary.org/obo/UO_0000006">
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<metadata_def:prefLabel>substance unit</metadata_def:prefLabel>
<metadata:prefixIRI>obo1:UO_0000006</metadata:prefixIRI>
<rdfs:label>substance unit</rdfs:label>
</owl:Class>
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</obo_purl:UO_0000006>
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</rdf:Description>
</rdfs:subClassOf>
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</rdf:RDF>