Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Ms4a2NM_00764110090Cd20    Ly-44    Ms4a1    147138
MS4A2BC0028079606CD20    B1    MGC3969    S7    LEU-16    Bp35    MS4A1    147138
MS4A2NM_0219509606B1    S7    Bp35    CD20    LEU-16    MGC3969    MS4A1    147138
MS4A2NM_1528679606B1    S7    Bp35    CD20    LEU-16    MGC3969    MS4A1    147138
MS4A2NM_1528669606B1    S7    Bp35    CD20    LEU-16    MGC3969    MS4A1    147138
Ms4a2BC02832210090Ms4a1    147138
Ms4a2NM_01351610090Fce1b    Ms4a1    Fcer1b    147138
Ms4a2NW_04756310116
MS4A2NM_0001399606FCERI    MS4A1    FCER1B    147138
Ms4a2NT_03968710090147138
MS4A2NT_0339039606147138
Ms4a2NM_01284510116FCIGA    Ms4a1    Fcer1b   

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

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Text2Knowledge ... Yong Huang 2002