Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Cd20NM_00764110090Ly-44    Ms4a2    Ms4a1    112210
CD20BC0028079606B1    MGC3969    S7    LEU-16    Bp35    MS4A2    MS4A1    112210
CD20NM_0219509606B1    S7    Bp35    MS4A2    LEU-16    MGC3969    MS4A1    112210
CD20NM_1528679606B1    S7    Bp35    MS4A2    LEU-16    MGC3969    MS4A1    112210
CD20NM_1528669606B1    S7    Bp35    MS4A2    LEU-16    MGC3969    MS4A1    112210
CD20AF1307489796
CD20AH0033539606112210
CD20M273959606112210
CD20L234159606112210
CD20L234169606112210
CD20L234179606112210
CD20L234199606112210
CD20M6254110090112210

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

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Text2Knowledge ... Yong Huang 2002