Fig. 3.
Effects on survival and mutant frequency of VAN (A) and CIN (B) in SOS-deficient E. coli NR11475 (recA430); see legend to Fig. 1 for details. Asterisk indicates a statistically significant antimutagenic effect (p < 0.001 for VAN at 40 μmol/plate; p < 0.05 for CIN at 10 μmol/plate).