Your Query returns 4 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
p38MAPKKNG_0005237227MKK3    Mek3    Mpk3    DMEK3    DMKK3    D-MKK3    CG12244    CT14280    DMKK3/lic    MEK3/MKK3    lic   
p38MAPKKNC_0043547227p38    MKK3    Mek3    Mpk3    DMEK3    DMKK3    D-MKK3    CG12244    DMKK3/lic    MEK3/MKK3    l(1)G0252    lic   
p38MAPKKNM_0578147227p38    MKK3    Mek3    Mpk3    DMEK3    DMKK3    D-MKK3    CG12244    DMKK3/lic    MEK3/MKK3    l(1)G0252    lic   
p38MAPKKAF0411367227

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

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Text2Knowledge ... Yong Huang 2002