CD274 and neoplasm: The enhanced migration of BsTE:T toward the MO5 cell-containing bottom well was observed in contrast to sole T-cell seeding, and PD-L1 antibody treatment in the bottom well abrogated the migration of BsTE:T to MO5 cells (Fig. 2A), demonstrating the potential role of PD-L1 in T-cell migration to tumor cells.