Th17 frequencies in VMC mice. A. Representative pictures of CD4+IL-17+ Th17 cells in VMC mice. Numbers in the upper right quadrants indicate the mean percentages of CD4+ Th17 cells in VMC mice. B. The results of the Th17 cells statistical analysis. ΔP < 0.01, versus control group. ΔP < 0.05, versus week 0, 1, 2, 3, and 6 VMC mice.