There was no correlation between IL-33 and CD68 (a universal macrophage marker); however, comparative analysis revealed that higher levels of IL-33 were associated with significantly lower CD68 (P = 0.02; median 2.19, n = 27 vs. median 3.57, n = 17) in individuals with T2D (Figures 4(a) and 4(b)). Here, IL33 is linked to type 2 diabetes mellitus.