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In the search for environmentally safe pesticides, attention has turned to strains of bacteria that are naturally toxic to the targeted insects and not to other forms of life. The contributors here assess recent research on B.t.i. and B. sphaericus and their effects on the larvae of mosquitoes and black flies, discussing the nature and genetics of the bacteria's parasporal bodies, the cloning of toxic genes, attempts to transfer genes for the endotoxins to larval foodsources, commercial use to combat diseases, government regulation, and public perceptions. Annotation copyright Book News, Inc. Portland, Or.
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