CD4 and gastric cancer: The correlation between infiltrated immune cells and HGF/c-MET in gastric cancer was analyzed, and results indicated that HGF are positively correlated with CD8+ T cell, CD4+ T cell, macrophage, neutrophil and dendritic cells, which mean that HGF might serve as an immune-positive stimulus via promoting the recruitment of dendritic cells, T lymphocytes, macrophage and neutrophil.