IL4 and rheumatoid arthritis: Compared with the control group, the levels of IL-4 (18.31 ± 5.57) (Figure 6(a)) and IL-10 (105.78 ± 4.37) (Figure 6(b)) were decreased in the RA group, while the level of IFN-γ (129.68 ± 24.13) (Figure 6(c)) was increased.