Fig. 1.

Proportion of animals surviving over time after the initiation of 24-h infusions of edema toxin (ET) or lethal toxin (LT) or diluent with protective antigen (PA) only (controls). Animals euthanized for experiments were considered to be survivors up until the time of death, at which time they were censored from further analysis. Both ET and LT resulted in progressive reductions in survival in patterns that were significantly different from control animals (P < 0.0001) but did not differ when the two toxins were compared (P = 0.66).