Fig. 4From: Ultrastructural alterations in the midgut of Bacillus sphaericus-treated Culex pipiens (Diptera: Culicidae) larvaeMidgut ultrastructure of Bacillus sphaericus-treated Culex pipiens third larval instar 10 h post-treatment showing a B. sphaericus spores and b Mv: microvilliBack to article page