FIG. 5.

Comparison of the ability of phage and nonfunctional heat-inactivated phage to rescue bacteremic mice. One group of 10 mice was treated with functional (plaque-forming) phage, while the other two groups were treated either with no phage or heat-inactivated phage. Eighty percent of the bacteremic mice treated with functional phage survived, while only 10% of the mice in each of the other two groups survived. The animals were monitored for 20 more days, and no changes in their state of health were noted.