Figure 5From: PD-L1 blockade improves survival in experimental sepsis by inhibiting lymphocyte apoptosis and reversing monocyte dysfunctionBoth extrinsic and intrinsic pathways contribute to decreased lymphocyte apoptosis in vivo. Mice underwent sham procedure, CLP, CLP plus anti-PD-L1 antibody administration, or CLP plus isotype administration. Thymus was harvested 24 h after surgery and stained for annexin V and propidium iodide (PI) (A, D) or FITC-labeled IEHD-FMK (B, E) or LEHD-FMK (C, F) which can irreversibly binds to activated caspase-8 or activated caspase-9. (D), (E), and (F) are the representative flow cytometry dot plots. Values in the upper right quadrant indicate the percent of apoptotic cells, caspase-8 or caspase-9 positive cells, respectively. * P <0.05.Back to article page