Programmed Cell Death 1 Receptor 50 Journal Article 48 Research Support, Non-U.S. Gov't 28 PDCD1 protein, human 21 B7-H1 Antigen 19 CD274 protein, human 11 Antigens, CD 9 mehr ... PD-1 8 CTLA-4 Antigen 7 Apoptosis Regulatory Proteins 6 Pdcd1 protein, mouse 6 82115-62-6 5 Antibodies, Monoclonal, Humanized 5 Hepatitis A Virus Cellular Receptor 2 5 Immune Checkpoint Inhibitors 5 Inducible T-Cell Co-Stimulator Protein 5 Interferon-gamma 5 Review 5 Antineoplastic Agents, Immunological 4 Cytokines 4 HAVCR2 protein, human 4 Immunologic Factors 4 Research Support, N.I.H., Extramural 4 cancer immunotherapy 4 drug delivery 4 immunotherapy 4 Antibodies 3 Antibodies, Monoclonal 3 Antigens, Differentiation, T-Lymphocyte 3 B7-1 Antigen 3 weniger ...