CD4 and neoplasm: Intensive B cell marker staining and CD4+ TFH markers colocalized with PD-1T TILs, implying that CD8+PD-1T TILs might recruit CXCR5+ B cells and TFH cells into the tumor region and that B cells, as well as TFH cells, could reinforce the antitumor capacity of CD8+ T cells.