Your Query returns 5 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RP4NM_14538310090Ops    Opn2    MGC21585    MGC25387    Rho    180380
RP4NM_0005399606OPN2    RHO    180380
RP4BC03176610090MGC21585    MGC25387    Opn2    Rho    180380
RP4BC01312510090MGC21585    MGC25387    Opn2    Rho    180380
RP4M6479110116

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

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Text2Knowledge ... Yong Huang 2002