IL13 and hepatocellular carcinoma: Xia et al. reported that GLP might accelerate the secretion of TNF-α, IL-6, and IL-1β through inducing CD68 macrophages, decrease the inhibitory effect of interleukin 13 (IL-13) secreted by natural killer T lymphocyte on tumor immune monitoring, enhance the immune function of organism, so that the growth of distal tumors in HCC mice is inhibited [138].