Fig. 1From: CD4 T lymphocyte subsets display heterogeneous susceptibility to apoptosis induced by serum from patients with systemic lupus erythematosusT lymphocytes from SLE patients show increased spontaneous apoptosis rate. Relative frequency of positive events for Annexin-V in total T lymphocytes (A), helper T lymphocytes (B) and Th1 cells (C) from SLE patients and controls. 24 h-culture in the presence of fetal bovine serum and no human serum supplement. Camptothencin (C +) differed significantly from all other conditions. Box-plot graph showing median, minimum, maximum, 25%, and 75% quartiles. p values were obtained using Mann–Whitney U testBack to article page