FIG. 1.

IL-17R^−/− mice are susceptible to oral T. gondii infection and display a high parasite burden. Survival of IL-17R^−/− mice infected with different doses of cysts (15 [A] or 30 [B] cysts/mouse) is shown. Data are represented as the cumulative percentage of two experiments (n = 10). The statistical analysis was performed using the Kaplan-Meier test (16). Shown is the number of parasites per microgram of tissue DNA in the organs of IL-17R^−/− mice infected with 15 (C) or 30 (D) cysts of T. gondii (n = 3). Statistical analysis was performed using an unpaired Student's t test as already described (12).