FIG. 5.

CFU and OD₆₀₀ for CHCC373 and MBP71 in M17 and RSM. A stationary culture of MBP71 was inoculated at 10% into LM17 and RSM. The OD₆₀₀ was monitored for the LM17 culture. The number of CFU was determined at the time points shown by diluting the sample 50 times in three consecutive steps and plating 0.1-ml aliquots in triplicate. This resulted in an initial value of around 150 CFU. The standard deviation was <12 CFU. In a separate experiment CHCC373 and MBP71 were inoculated at 1% into LM17 and LM17 plus 20 mg of thymidine (dT) per liter, respectively.