For immunohistochemistry to detect components of the tumor microenvironment, we analyzed the distributions of PD-L1, markers of vascular endothelial cells (CD31 and CD34), markers of TAMs (Tumor-associated macrophages, CD163 and CD68), markers of tumor-associated fibroblasts (vimentin, SMA) in the tumor tissue. The gene discussed is PECAM1; the disease is neoplasm.