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    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:ns4="http://purl.obolibrary.org/obo/"
    xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"
    xmlns:ns1="http://metadb.riken.jp/db/rikenbrc_cell/"
    xmlns:ns5="http://metadb.riken.jp/db/bioresource_schema/"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#">
  <rdf:Description>
    <ns4:BFO_0000050>
      <ns1:cell_0000002 rdf:about="http://metadb.riken.jp/db/rikenbrc_cell/cell_Donor_AES1421">
        <ns5:brs_indicatesStage>embryo</ns5:brs_indicatesStage>
        <ns5:brs_hasGender rdf:resource="http://purl.obolibrary.org/obo/PATO_0000384"/>
        <ns4:RO_0002162 rdf:resource="http://purl.obolibrary.org/obo/NCBITaxon_10090"/>
        <rdfs:label>Donor_AES1421</rdfs:label>
      </ns1:cell_0000002>
    </ns4:BFO_0000050>
  </rdf:Description>
  <rdf:Description>
    <ns4:BFO_0000050 rdf:resource="http://metadb.riken.jp/db/rikenbrc_cell/cell_Donor_AES1421"/>
  </rdf:Description>
</rdf:RDF>