Figure 7.
Kinetics of the C3H/HeJBir CD4+ T cell response to enteric bacterial antigens. 4 × 105 spleen and MLN CD4+ T cells from C3H/ HeJBir mice of various ages from 2 to 25 wk were cultured with 4 × 105 cecal bacterial (closed circles) or E. coli (open circles) antigen pulsed APCs from C3H/HeJ mice per well, prepared as in Fig. 1. 0.5 μCi of [3H]TdR was added to the wells for the last 18 h of a 5-d culture. Results are expressed as mean cpm ± SD of triplicate cultures.