CD4 and neoplasm: The heterogeneity in immune cells within the tumor microenvironment was investigated between subtypes, with cluster2 exhibiting higher fractions of memory and naïve B cells, M2 macrophages, resting mast cells, and monocytes as well as lower fractions of M0 and M1 macrophages, activated and resting NK cells, activated memory CD4+ T cells, and follicular helper T cells.