The frequencies of peripheral blood IFN‐γ+CD4+, IFN‐γ−IL‐17+IL‐22−CD4+ (Th17), and IFN‐γ−IL‐17−IL‐22+CD4+ (Th22) cells and ELISA analysis of the concentrations of serum IL‐22, IL‐17, and IFN‐γ. At least 20,000 events were analyzed. Data shown are representative charts from 31 patients and 16 controls or expressed as individual values of the percentage of each type of cells from three separate experiments.