Fig. 4

Survival curves of mice in pEGFP-SOD and control groups, following challenge with T. gondii ME49 strain. Survival time was monitored daily after challenge with 1 × 103 live tachyzoites of T. gondii ME49 strain, 4 weeks after the last immunization (n = 9 animals per group). Comparisons of differences between experimental group pEGFP-SOD and control groups (Blank control, PBS or pEGFP-C1) were significant (p < 0.05)