Your Query returns 13 Accession Numbers:

Query TermAccessionNCBI TaxonidSynonymsPhenotype (OMIM) *
STE20NC_0043547227Pak2    dPAK2    CG18582    mbt   
STE20NM_0786517227Pak2    dPAK2    CG18582    mbt   
STE20L046554932
ste20AJ2239844896
ste20AJ3097324841
STE20AF31563840410STE20a (D)   
STE20AF3323884754
ste20AF3098054754
STE20AY035877178876
ste20AY131229203783
STE20U115814932
ste20AX53775036080
STE20NC_0011404932

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

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Text2Knowledge ... Yong Huang 2002