Fig. 5. The inhibition of Mad is specific to Nemo and not Erk MAPK. (A) A wild-type adult Drosophila wing. (B) The extra vein phenotype induced by vg>Mad. (C) A wing from a rl^Sem/+ hypermorphic fly. (D) Co-expression of UAS-nmo suppresses the vg>Mad phenotype. (E) Co-expression of UAS-rl^Sem (indicated as Sem) enhances the vg>Mad phenotype (F) Heterozygosity for the rl^Sem mutant enhances the vg>Mad phenotype.