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. 2005 Dec 5;202(11):1549–1561. doi: 10.1084/jem.20051506

Figure 4.

Figure 4.

Natural CD4+CD25+ T reg cells are equally functional in A/J and C3H animals. CD4+CD25 and CD4+CD25bright cells were purified from the lungs of HDM-sensitized and -challenged A/J or C3H mice and stained with CFSE. 50,000 CFSE-labeled CD4+CD25 T cells were co-cultured with the indicated numbers of CD4+CD25bright and stimulated with anti-CD3/-CD28–coated latex beads as described in Materials and methods. Co-cultures consisted of CD4+CD25/CD4+CD25bright population from A/J/A/J, A/J/C3H, C3H/A/J, or C3H/C3H mice as indicated. TCR-β+ T cells were detected via flow cytometry, and intensity of CFSE staining was used to identify T cells that remained undivided after 5 d of culture (A). Levels of IL-2 (B), IL-10 (C), or IFN-γ (D) were assessed in tissue culture supernatant by ELISA. Data represent means ± SEM. *, P < 0.05 between cultures stimulated in the presence and absence of CD4+CD25bright.