7 0 1 http://regenbase.org/ontology#RB_0000177 membrane 'membrane' SubClassOf 'material entity' 'membrane' SubClassOf 'biological entity' http://regenbase.org/ontology#RB_0000065 gene 'gene' SubClassOf 'material entity' 'gene' SubClassOf 'biological entity' http://regenbase.org/ontology#RB_0000180 axon degeneration 'axon degeneration' SubClassOf 'biological process' 'axon degeneration' SubClassOf 'degeneration' http://regenbase.org/ontology#RB_0000062 histological tissue section 'histological tissue section' SubClassOf 'material entity' 'histological tissue section' SubClassOf 'organ part' http://regenbase.org/ontology#RB_0000323 axon degeneration 'axon degeneration' SubClassOf 'degeneration' http://regenbase.org/ontology#RB_0000017 medium 'medium' SubClassOf 'material entity' 'medium' SubClassOf 'heterogeneous substance' http://regenbase.org/ontology#RB_0000141 graft 'graft' SubClassOf 'material entity' 'graft' SubClassOf 'biological entity' http://regenbase.org/ontology#RB_0000323 axon degeneration 'axon degeneration' SubClassOf 'degeneration'