Your Query returns 10 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Mpk2AY0716707227
MPK2AJ2932805665
MPK2AY4262505911
MPK2AJ60815980379CchMPK2    CcMPK2   
MPK2AY2615134081
Mpk2NG_0005247227p38    Dp38    Erk2    p38a    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2    CT17349    group 2    p38a MAP kinase   
Mpk2AE0037467227
Mpk2NM_0578157227p38    Dp38    Erk2    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2   
Mpk2NM_1701267227p38    Dp38    Erk2    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2   
Mpk2NT_0337777227p38    Dp38    Erk2    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2   

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

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Text2Knowledge ... Yong Huang 2002