Class: xref
http://www.biopax.org/release/biopax-level2.owl#xref
Annotations (1)
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comment "Definition: A reference from an instance of a class in this ontology to an object in an external resource.
Comment: Instances of the xref class should never be created and more specific classes should be used instead." (string)
Superclasses (5)
Disjoints (3)
Usage (6)