Survival of wild-type and indicated mutant Salmonella in chemostat cultures. Each symbol represents an individual chemostat reactor (enrofloxacin: wild type and lexA3 1 h, n = 5; wild type 4 h, n = 16; tisB and Δ3T, n = 4; ceftriaxone: wild type, n = 8; Δ3T, n = 7). Horizontal bars represent geometric means (statistical tests as in c ).
