FIG. 4.

Kinetics of chromosome degradation in 2-AP-treated dam cells without addition of rifampin. dam-mutant culture was treated with 2-AP and incubated at 37°C for different times as indicated. Samples were precipitated with methanol and analyzed as described in the text. DAPI int (integral) is the area signal of the pulses produced at the detector as the cell passes through the measurement region.