CD80 Expressed by CD8⁺ T Cells Contributes to PD-L1-Induced Apoptosis of Activated CD8⁺ T Cells

Figure 1

CD80-KO and WT CD8⁺ T cells survive at equal levels after ConA activation. WT and CD80-KO cells were activated with ConA, then harvested for analysis. Live cells were counted by Trypan blue exclusion (, ±SD, , ns: not significant).