Effect of phage treatment on bacterial density. Density of bacteria in lungs was determined in mice that were infected with Burkholderia cenocepacia AU0728 and treated 24 h later with intranasal inhalation (6 mice per group) or intraperitoneal injection (6 mice per group) of BcepIL02. Infected control mice were mock-treated with intranasal (5 mice per group) or intraperitoneal (11 mice per group) super optimal broth medium (SM) buffer without phage (because there was no difference between these 2 groups, results were combined). Other control mice were treated with intraperitoneal injection of ultraviolet (UV)-inactivated BcepIL02 (6 mice per group) or intraperitoneal injection of λ phage (8 mice per group). The horizontal line in each box is the median colony-forming units (CFUs) per lung for the group, calculated from 2 or more independent experiments, each performed in triplicate or quadruplicate; the boxes indicate the interquartile range of CFUs per lung, and the whiskers indicate the range of CFUs per lung for the group. ·Extreme outlier; *P