Your Query returns 12 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
arpc3AJ56346029159
Arpc3NM_0198241009021kDa    p21-Ar    p21Arc    1110006A04Rik   
ARPC3AY4053369606
ARPC3AY4053379598
ARPC3AY40533810090
ARPC3NM_0057199606ARC21    p21-Arc   
Arpc3NT_03931210090
Arpc3BC01361810090p21Arc    p21-Ar    21kDa   
Arpc3BC05444010090p21Arc    p21-Ar    21kDa   
ARPC3G621809796
ARPC3NT_0097759606
ARPC3BC0677479606ARC21    p21-Arc   

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

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Text2Knowledge ... Yong Huang 2002