FIG. 4.

Protection of mice after challenge with 70 cysts of the 76K strain of T. gondii. Mice were sacrified 1 month after the challenge, and the cysts in each brain were counted. Results are expressed as the mean number of cysts for each group of mice ± SD. Results from one of three similar experiments are shown. Statistics were performed with an analysis of variance test. ∗∗∗, P < 0.001; ∗∗, P < 0.01. P values above the lines indicate statistics from a comparison with nontreated mice. P values below the lines indicate statistics from a comparison with SAG1-treated mice.