Cell differentiation. (A) Appressorium differentiation on locust hind wing by wild-type (WT) and antisense-Mos1 (B) strains at 18 h postinoculation. (C) Hyphal body differentiation by WT and (D) antisense-Mos1 strains in Manduca hemocoel at 48 h postinjection. CO, conidia; AP, appressorium; HB, hyphal body; HE, hemocytes of insect. Bar, 10 μm.