Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mash2NM_008554100902410083I15Rik    Ascl2   
MASH2NM_0051709606ASH2    HASH2    ASCL2   
mash2U7762810090
Mash2AJ25183510090

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

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Text2Knowledge ... Yong Huang 2002