CD274 and neoplasm: For example, after 28 days, the PD-L1-NitraTh vaccine administered without an adjuvant inhibited tumor growth with an inhibition rate of 40.17 ± 4.72%, while the PD-L1-NitraTh/p-SGP group had an inhibition rate of 68.64 ± 3.98%, which suggested that this adjuvant could greatly improve the anti-tumor effect [29].