Figure 4.

Frequency of Th2, Th17, and regulatory T cells in the airways, lung parenchyma, and lymph nodes of A/J, BALB/c, and C57BL/6 naïve animals. Flow cytometric analysis of CD4⁺ cells producing IL-4, IL-17, and IL-10, and CD4⁺CD25⁺Foxp3⁺ Tregs, respectively, in the BALF (a–d), lung tissue (e–h), and in total lymph nodes (i–l). Values represent mean ± SEM of 4-5 animals per group. ^∗P < 0.05, ^∗∗P < 0.01, ^∗∗∗P < 0.001.