The use of insect-selective neurotoxins in the development of improved nuclear polyhedrosis virus-based insecticides: P. V. Choudary,1,2M. Moynihan,1,2V. K. Ward,1,2B. F. McCutchen,2E. Fowler,4B. D. Hammock2,3 and S. Maeda2 (1UC-Davis Antibody Engineering Laboratory, 2Department of Entomology, 3Department of Environmental Toxicology, University of California, Davis, CA 95616, U.S.A.; and 4CIBA-GEIGY Agricultural Biotechnology Research Unit, Research Triangle Park, NC 27709, U.S.A.)