Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
RSp1221NC_003296267608RS03165    nirD   
RSp1221AL646083305RS03165    nirD   

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

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Text2Knowledge ... Yong Huang 2002