Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Ppp2r1aNM_01689110090PP2A    PR65    6330556D22Rik    605983
Ppp2r1aXM_34176410116
Ppp2r1aNW_04755510116
PPP2R1ABC0015379606MGC786    605983
PPP2R1AAY4079829606605983
PPP2R1AAY4079839598
PPP2R1AAY40798410090605983
PPP2R1ANM_0142259606MGC786    605983
Ppp2r1aNT_03964310090605983
Ppp2r1aBC00660610090PR65    PP2A    605983
Ppp2r1aBC05267810090PR65    PP2A    605983
PPP2R1ANT_0111099606605983

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

Google

Text2Knowledge ... Yong Huang 2002