Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
MAP19NM_0066109606sMAP    MASP2   
MAP19NM_1392089606sMAP    MASP2   
MAp19BC01389310090MASP-2    Masp2   
MAp19Y1856710116
MAp19Y1856810116
MAp19Y1856910116
MAp19Y1857010116
MAp19Y1916010090
MAp19M3798011864
MAp19NC_00140811864

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

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Text2Knowledge ... Yong Huang 2002