Your Query returns 6 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HHR6ANM_01966810090HR6A    Ube2a   
HHR6ABC0101759606RAD6A    UBC2    UBE2A   
HHR6ANM_0033369606UBC2    RAD6A    UBE2A   
HHR6ANM_1817629606UBC2    RAD6A    UBE2A   
HHR6ANM_1817779606UBC2    RAD6A    UBE2A   
HHR6ABC02605310090HR6A    Ube2a   

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* OMIM link based on symbol match for human and mouse.

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Text2Knowledge ... Yong Huang 2002