Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Arpc2NM_1361897227p34    38C.47    ARC-P34    CG10954    ARPC2/p34   
Arpc2NT_0337797227p34    38C.47    ARC-P34    CG10954    ARPC2/p34   
ARPC2BC0005909606ARC34    p34-Arc    PNAS-139    PRO2446    604224
ARPC2AY4001079606604224
ARPC2AY4001089598
ARPC2AY40010910090604224
ARPC2NM_0057319606ARC34    PRO2446    p34-Arc    PNAS-139    604224
ARPC2NM_1528629606ARC34    PRO2446    p34-Arc    PNAS-139    604224
Arpc2XM_12977310090604224
Arpc2NT_03917010090604224
ARPC2NT_0054039606604224

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

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Text2Knowledge ... Yong Huang 2002