Figure 1.

Phage and host population dynamics over time in each replicate. (a–d) 10⁹–10⁶ PFU phage treatments, respectively, with replicate identity indicated above each sub-panel. Phage titres (plaque-forming units; PFU ml⁻¹) are shown in black and host densities (colony-forming units; CFU ml⁻¹) are shown in blue. The level of detection is 200 PFU ml⁻¹ (dashed line).