Your Query returns 9 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Arpc4NM_0265521009020kDa    p20-Arc    5330419I20Rik   
ARPC4BC0125969606ARC20    p20-ARC    MGC13544   
ARPC4BC0654239606ARC20    p20-ARC    MGC13544   
ARPC4NM_0057189606ARC20    p20-ARC    MGC13544   
Arpc4NT_03935310090
Arpc4BC05530910090p20-Arc    20kDa   
ARPC4NT_0225179606
arpc4NM_2055377955fa07b12    zgc:77932    wu:fa07b12   
arpc4BC0658997955fa07b12    wu:fa07b12    zgc:77932   

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

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Text2Knowledge ... Yong Huang 2002