Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ARC-P34NM_1361897227p34    Arpc2    38C.47    CG10954    ARPC2/p34   
ARC-P34NT_0337797227p34    Arpc2    38C.47    CG10954    ARPC2/p34   
Arc-p34AY0603917227
Arc-p34AE0036667227

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

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Text2Knowledge ... Yong Huang 2002