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Effects of temperature on chlorine inactivation of M. gordonae. Experimental conditions were pH 7 and an initial chlorine concentration of 0.5 mg/liter. Cells were grown in Middlebrook 7H9-Tween medium. The chlorine susceptibility of M. gordonae was analyzed at 4, 16, and 25°C. No, initial number of CFU; N, number of CFU at each time point. Symbols: ▪, 4°C (y = 0.01 x); ▴, 16°C (y = 0.02 x); ⧫, 25°C (y = 0.09 x). R2, correlation coefficient values.
