Your Query returns 11 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Orc2lNM_00876510090Orc2    601182
ORC2LAY4019439606601182
ORC2LAY4019449598
ORC2LAY40194510090601182
ORC2LNM_0061909606ORC2    601182
Orc2lNT_03917010090601182
Orc2lBC01525710090601182
ORC2LG733039606601182
ORC2LG733049606601182
ORC2LBC0148349606ORC2    601182
ORC2LNT_0054039606601182

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

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Text2Knowledge ... Yong Huang 2002