Your Query returns 2 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
l(1)G0252NC_0043547227p38    MKK3    Mek3    Mpk3    DMEK3    DMKK3    D-MKK3    CG12244    p38MAPKK    DMKK3/lic    MEK3/MKK3    lic   
l(1)G0252NM_0578147227p38    MKK3    Mek3    Mpk3    DMEK3    DMKK3    D-MKK3    CG12244    p38MAPKK    DMKK3/lic    MEK3/MKK3    lic   

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

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Text2Knowledge ... Yong Huang 2002