Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
DNOS1NM_0788177227NOS    DNOS    CG6713   
DNOS1NT_0337797227NOS    DNOS    CG6713   

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

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Text2Knowledge ... Yong Huang 2002