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Apoptosis of thymocytes from DSS-treated mice. Thymocytes were harvested from control and DSS-treated mice and assayed for apoptosis after 8 h in culture. Data shown are percent apoptosis of major subpopulations of thymocytes as determined by DAPI staining. Thymocyte subpopulations were delineated by labeling with anti-CD4 and anti-CD8 antibodies. Each circle represents percent apoptosis for one mouse; bars represent mean apoptosis rate. Controls, n = 8; DSS, n = 9 (*P < 0.01).
