Methacrylate embedding as a new technique for histopathological studies on the effect of Bacillus thuringiensis...

Studies on the pathogen Bacillus thuringiensis in Egypt and its possible role as a biological control agent have been reviewed. More emphasis in research was given to some lepidopterous cotton pests and few other species. Histopathological changes in B. thuringiensis treated larvae could be observed in the midgut. The methacrylate embedding technique achieved satisfactory results in concern of better preservation of histological fine details.