Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
21kDaNM_00896310090PGD2    Ptgs3    L-PGDS    Ptgds   
21kDaNM_01982410090p21-Ar    p21Arc    1110006A04Rik    Arpc3   
21kDaBC01361810090p21Arc    p21-Ar    Arpc3   
21kDaBC03808310090PGD2    L-PGDS    Ptgds   
21kDaBC05444010090p21Arc    p21-Ar    Arpc3   

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

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Text2Knowledge ... Yong Huang 2002