CD8A and neoplasm: Flow cytometry analyzes revealed that the fluorescein isothiocyanate (FITC)-labeled Tri-NAb effectively adhered not only to tumor cells with high PDL1 expression but also to NK and CD8+ T cells expressing both 4-1BB and NKG2A (Figs. 3b–d, Supplementary Figs. 17 and 14).