Fig. 6

CTLA-4 correlates with CD44 expression in different populations of CD117-positive thymocytes. Thymocytes were treated as indicated in Methods and analyzed by flow cytometry. a CTLA-4 expression in CD4⁺CD117⁺CD44⁺ cells. b CTLA-4 expression in CD8⁺CD117⁺CD44⁺ cells. c CTLA-4 expression in DNCD117⁺CD44⁺ cells. Data show mean percent of total cells ± SD from three independent experiments. *p < 0.05, **p < 0.01, ***p < 0.001. DN double-negative