FIG. 1.

Proliferative responses of splenic T cells from wild-type 129 SV/EV (+/+) and IFN-γ R^−/− (−/−) mice after 36 to 48 h of culture in medium alone (A) or supplemented with IL-2 (B) or anti-CD3 (C). The mean counts per minute of [³H]thymidine incorporation are ± 1 standard deviation plotted. The results are averaged from the values for individual mice, with a minimum of two mice tested per time point. The Student t test was used to generate P values for data from days 7 to 13 p.i.