Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
ARC34BC0005909606p34-Arc    PNAS-139    PRO2446    ARPC2    604224
ARC34NM_0057319606PRO2446    p34-Arc    PNAS-139    ARPC2    604224
ARC34NM_1528629606PRO2446    p34-Arc    PNAS-139    ARPC2    604224
ARC34AF0060859606604224

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

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Text2Knowledge ... Yong Huang 2002