AChE-R thymocytes are more resistant to apoptosis. (A) Living thymocytes count after 1 and 2 days of culture showed that TgR thymocytes are more resistant to apoptosis. This was confirmed by annexin staining (B). (C-E) TUNEL staining on different thymocyte subsets. CD4⁺CD8⁺ (C) from TgR mice are less sensitive (P < .05) and CD4⁺ (D) more sensitive (P < .01) to spontaneous apoptosis, whereas sensitivity of the CD8⁺ subset is unchanged. Error bars show standard error of the mean (SEM). *P < .05.