PDCD1 and neoplasm: Flow cytometry performed on tumor samples from mice sacrificed at day 14 revealed that the percentage of tumor-infiltrating CD8+ T cells in animals treated with dual axis inhibition trended higher than the percentage in either the control or the mono anti-PD-1 group, but this difference did not reach statistical significance (27.4 vs. 19.05 and 19.70; p > 0.05).