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<p> I am a researcher interested in ontology reuse and especially in bio-ontologies. In a part of my research, I am interested to determine the ontology domain (Category). My question is does bioportal has a hierarchy for those categories? and if so, can I have access to it?
<br />The second question is what is the type of database that you store the ontologies information in? and also can I have access to it?
<br />Thanks in advance.</p>