- Characterization of amplification core and esterase B1 gene responsible for insecticide resistance in Culex. Mouches, C., Pauplin, Y., Agarwal, M., Lemieux, L., Herzog, M., Abadon, M., Beyssat-Arnaouty, V., Hyrien, O., de Saint Vincent, B.R., Georghiou, G.P. Proc. Natl. Acad. Sci. U.S.A. (1990)