Your Query returns 16 Accession Numbers:
Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
Erk2NM_01194910090ERK    MAPK2    PRKM2    Prkm1    p41mapk    p42mapk    9030612K14Rik    Mapk1    176948
ERK2BC0178329606ERK    PRKM1    P42MAPK    MAPK2    PRKM2    ERT1    p40    p41    p38    p41mapk    MAPK1    176948
Erk2NG_0005247227p38    Dp38    p38a    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2    CT17349    group 2    p38a MAP kinase    Mpk2   
ERK2NM_0027459606ERK    p38    p40    p41    ERT1    MAPK2    PRKM1    PRKM2    P42MAPK    p41mapk    MAPK1    176948
ERK2NM_1389579606ERK    p38    p40    p41    ERT1    MAPK2    PRKM1    PRKM2    P42MAPK    p41mapk    MAPK1    176948
ERK2NM_1757939913MAPK1   
Erk2BC00670810090Prkm1    ERK    MAPK2    PRKM2    p41mapk    p42mapk    9030612K14Rik    Mapk1    176948
Erk2NM_05384210116Mapk1   
Erk2NM_0578157227p38    Dp38    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2    Mpk2   
Erk2NM_1701267227p38    Dp38    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2    Mpk2   
Erk2NT_0337777227p38    Dp38    p38A    D-p38    DMPK2    CG5475    D-MPK2    D-P38a    DmMPK2    Mpk2   
ERK2AY1492755741
ERK2M844899606176948
ERK2M6430010116
Erk2SEG_D87264S10090176948
Erk2D8726410090176948

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

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Text2Knowledge ... Yong Huang 2002