This was also the case for PD-L1 expression of tumor-infiltrating CD4+ and CD8+ T cells (26.5 ± 19.4% vs. 17.0 ± 12.6% and 89.4 ± 21.4% vs. 91.1 ± 12.5%, Figure 5D, middle plot). The gene discussed is CD4; the disease is neoplasm.