Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MGC63889BC0531347955Bysl    zgc:63889   
MGC63889NM_2011067955Bysl    zgc:63889   

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

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Text2Knowledge ... Yong Huang 2002