susceptibility to IMD among different
isolates. Each point on the nonlinear regression curve represents the mean percent of the maximum PPE determined in triplicate wells. IC50 is drug concentration resulting in 50% of the maximum PPE detected in wells not containing drug. (a) Susceptibility of the USDA FL strain (red) and the TX isolate (purple). (b) Susceptibility of FL Exp variant 1 (purple) and FL Exp variant 2 (green).