Your Query returns 3 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
zMKK3BC0441297955MKK3    map2k3   
zMKK3NM_1317247955MKK3    map2k3   
zMKK3AB0308997955

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

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Text2Knowledge ... Yong Huang 2002