Figure 1.
Decrease in peripheral CD4+CD25+ T cells in Tgf-β1 −/− mice. Thymocytes (a) and splenocytes (b and c) from 8–10-d-old Tgf-β1 − / − mice or littermate controls were counted and stained for CD4 and CD8 and analyzed by flow cytometry. Peripheral CD4 T cells from Tgf-β1 −/− mice (gray line) or littermate controls (black line) were stained for CD44 and CD62L. Thymocytes and splenocytes from 8–10-d-old Tgf-β1 − / − mice or littermate controls were stained for CD4 and CD25 and analyzed by flow cytometry (d). Proportion of CD4+CD25+ cells among CD4 T cells (e, n = 20).