1. Gatalica Z, Snyder C, Maney T, et al. Programmed cell death 1 (PD-1) and its ligand (PD-L1) in common cancers and their correlation with molecular cancer type.[J]. Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology, 2014, 23(12):2965-70.
2. Zhang Y , Kang S , Shen J , et al. Prognostic Significance of Programmed Cell Death 1 (PD-1) or PD-1 Ligand 1 (PD-L1) Expression in Epithelial-Originated Cancer[J]. Medicine, 2015, 94(6):e515.
3. 中华医学会.《临床技术操作规范·病理学分册》.人民军医出版社,2004.