Figure 7

A: Frequency of occurrence of various values of τ (all C _I ; C _I > 100; C _I < 100 CFU mL^-1, from top to bottom). Left-hand side plots: mid-log phase cells diluted with and grown in LB with ~2×10⁵ CFU mL^-1 of disrupted cells LB. Right-hand side plots: mid-Log phase cells diluted with and grown in LB. B: Plot of 572 observations of τ as a function of initial cell concentration (C _I ; diluted with and grown in LB with ~ 2×10⁵ CFU mL^-1 of disrupted E. coli cells LB).