Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
HEP-NOSNM_0006259606NOS    INOS    NOS2    NOS2A   
HEP-NOSNM_1532929606NOS    INOS    NOS2    NOS2A   

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

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Text2Knowledge ... Yong Huang 2002