FIG 7 .
Kaplan-Meier survival curves of mice injected with A. hydrophila strains SSU, ATCC 7966T, E1, and E2. Groups of nine Swiss-Webster mice were injected with doses of 5 × 107, 1 × 107, 8 × 106, 5 × 106, and 3 × 106 CFU by the i.p. route. The animals were observed for death over a period of 14 days. The data were statistically analyzed by using a Kaplan-Meier survival estimate. Single and double asterisks indicate the groups compared for statistically significant differences.