Fig. 3
Expression of dual-positive Th17/Th1cells in peripheral blood from never-smokers and smokers with normal lung function, and patients with COPD. The CD4 + T cell population was analyzed for production of interferon-γ and interleukin-17. a-b Frequencies of Th17/Th1 cells among CD4+ T cells and Th17 cells in never-smokers, smokers and patients with COPD. c Representative flow cytometry of Th17/Th1 cells were shown. Data were presented a median (IQR). Horizontal lines indicate median values. A p value< 0.05 was considered statistically significant