Fig. 1.

Production of cytokines in 18 children with stable congenital toxoplasmosis (CT) and 13 children showing serological rebound. IFN-γ (a) and IL-4 (b) were measured in supernatants of whole blood after 7 days incubation with Toxoplasma gondii antigen as described in Subjects and Methods. Levels of cytokines above controls were expressed in pg/ml. Boxes represent values between 25th and 75th percentiles and medians; bars indicate 10th and 90th percentiles. Circles outside the bars are extra values.