By using 125I-labeled Bt toxin, the differences of binding kinetics among CrylAa, CrylAb, Cry 1 Ac and BBMV in larval midgut of resistant and susceptible H. armigera were tested.

• 利用~(125)I标记Bt毒蛋白，测定了棉铃虫抗、感品系幼虫中肠BBMV与Cry1Aa、Cry1Ab和Cry1Ac结合动力学的差异。