FIG. 6.

Decreased thymocyte survival in STAT3SA/− mice. (A) Thymocyte numbers of littermate STAT3+/SA and STAT3SA/− mice at ages of 7 days (three mice each), 10 weeks (four mice each), and 6 months (five mice each). The values shown are the mean cell number per thymus with the standard error. Two asterisks indicate that P was <0.01. (B) Thymocyte apoptosis of the littermate STAT3+/SA and STAT3SA/− mice. Thymocytes from the mice examined in panel A were stained with fluorescein isothiocyanate-Annexin V and propidium iodide; the mean percentages of the Annexin V-positive cells are shown with standard errors. One asterisk indicates that P was <0.05; two asterisks indicate that P was <0.01.