Fig. (3).

Changes in WT B. bacteriovorus, HI variants, and host cell concentration during predation. (A). WT B. bacteriovorus (B. b) was propagated on E. coli WM3064 (Host) in DNB-DAP minus media for 72 hr at 30˚C. The change in cell population was measured as described in the material and methods. (B). The influence of temperature on the emergence of HI variants. WT B. bacteriovorus (B. b) was propagated on E. coli WM3064 (Host) in DNB-DAP minus media for 72 hr at 35˚C, 30˚C, and 36˚C. Experiments were carried out three times yielding similar results. Error bars indicate standard errors.