IL10 and atherosclerosis: In atherosclerosis, Treg cells stimulate macrophage production of IL‐10 by secreting interleukin‐13 (IL‐13), and autocrine‐paracrine signaling of IL‐10 induces vav guanine nucleotide exchange factor 1 in macrophages, which activates Rac1 and facilitates macrophage cytokinesis.94