Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
PRO2446BC0005909606ARC34    p34-Arc    PNAS-139    ARPC2   
PRO2446NM_0057319606ARC34    p34-Arc    PNAS-139    ARPC2   
PRO2446NM_1528629606ARC34    p34-Arc    PNAS-139    ARPC2   

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

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Text2Knowledge ... Yong Huang 2002