CD274 and neoplasm: Pdl1-WT and Pdl1-KO Hepa1-6 cells were subcutaneously inoculated in C57BL/6 mice, and a cohort of mice bearing the Pdl1-WT tumor were further treated with 10 mg/kg anti–PD-L1 antibodies 3 times per week starting at day 14 postinoculation.