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Major Bt cotton planted (A,B) and field monitoring of Pectinophora gossypiella Cry1Ac resistance (C,D) in China. LC50 represents the median lethal concentration of the Cry1Ac protein to the collected larvae, and error bars stand for the 95% fiducial limits. The percent of cotton planted and bioassay data of LC50 from 2004-present are from Wan et al. [23].
