IL9 and type 2 diabetes mellitus: Analysis of plasma cytokine levels revealed a significant main effect of type 2 diabetes diagnosis on IL-2 (F(1,81) = 6.83, P = 0.011; Figure 1A), IL-7 (F(1,81) = 5.49, P = 0.022; Figure 1B), IL-9 (F(1,81) = 11.17, P = 0.001; Figure 1C), and CCL4 (F(1,81) = 9.66, P = 0.003; Figure 1D).