Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
NfmNM_00869110090NF-M    NF160    Nef3    162250
NFMNM_0053829606NEFM    NF-M    NEF3    162250
NfmNM_01702910116Nefm    Nef3   

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

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Text2Knowledge ... Yong Huang 2002