CD274 and lymphoma: In the study, we constructed an allograft murine tumor model which included murine lymphoma cell line E.G7-OVA (E.7, ELF4 lymphoma cell line transfected with ovalbumin) as the target, murine NKDCs cultured from bone marrow cells (BMs) and anti-murine PD-L1 antibody (α-mPD-L1) as effectors.