FIG. 2.

Synchronous cell division after reactivation of anaerobic persistent BCG. Log CFUs per milliliter as a function of time after reactivation of an anaerobic persistent culture are shown. Twenty-day-old sealed stirred culture was diluted 1:100 in fresh oxygen-rich medium and incubated under aerated conditions. The data points represent mean values from three independent experiments. The solid lines between 0 and 10 h and between 16 and 36 h represent the average of the respective mean counts (n = 6 and 9) during those periods of shift-up. The dotted lines represent 1 standard deviation above and below these averages.