CD4 and metabolic dysfunction-associated steatohepatitis: In this study, HFHCCC diet was used to induce NASH liver fibrosis, with the stage of F1-2, and KCs cells were observed in the liver tissue of mice at 24 weeks The significant recruitment of neutrophils and the recruitment and release of pro-inflammatory cytokines, chemokines and colony-stimulating factors, but CD4+ T cells, CD8+ T and other adaptive immune-related cells and cytokines did not change significantly before and after the HFHCCC diet modeling, which is also basically consistent with the results of human research.