Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
BT2.2BC0174979606BTF2    BTN2A2   
BT2.2BC0140219606BTF2    BTN2A2   
BT2.2NM_1815319606BTF2    BTN2A2   
BT2.2NM_0069959606BTF2    BTN2A2   

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

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Text2Knowledge ... Yong Huang 2002