CD4 and neoplasm: The scatter plot shown in Figure 8 demonstrates the close relationship between POLD1 expression levels and tumor purity (HR=0.141), B cells (HR=0.468), CD8+ T cells (HR=0.277), CD4+ T cells (HR=0.358), macrophages (HR=0.397), neutrophils (HR=0.364) and dendritic cells (HR=0.438).