Your Query returns 8 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
NADH 1NC_0019507830ND1   
NADH 1AF1177168032
NADH 1AF1177178032
NADH 1AF1177188032
NADH 1AF1177198032
NADH 1AF1177208032
NADH 1AF1177218032
NADH 1Y160677830

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

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Text2Knowledge ... Yong Huang 2002