Figure 5. Apoptosis under CD3/CD28 stimulation.
A. Representative plots demonstrating upregulation of CD25 in response to CD3/CD28 stimulation in mixed splenocyte cultures. B. Spontaneous apoptosis in isolated (n = 4) and gated cells (n = 5) in reference to responsiveness (CD25 expression) to CD3-activation, assuming negligible contribution of naturally occurring CD25+ T cells in mixed cultures. C. Proliferation rates under CD3-activation of responsive (CD25−→CD25+) and non-responsive (CD25−) subsets in isolated CD25− T cells (n = 4) and in mixed cultures (gated, n = 5). D. Fractional apoptosis of responsive and non-responsive cells to CD3/CD28 stimulation in mixed cultures (n = 5). E. Proliferation rates under CD3/CD28 stimulation.