The Protein Pd-1 Is A Checkpoint To Slow Down T-Cells. Pd-1 Red Extends From The Surface Of A T-Cell And Interacts With The Ligand Protein Pd-L1 Yellow From A Antigen Presenting Cell. Although The T-Cell Has Been Activated Through The Interaction Of A T-Cell Receptor Blue And A Mhc Protein Violett, Pd-1 Regulates These Activation Down. It Is A Checkpoint To Slow Down T-Cells.

KEYWORDS

accessory adaptive antigen blood cancer cascade cell cells class complex cytotoxic death defense dendritic disease helper histocompatibility human illness immune immunity immunization innate interferon killer lymphocyte major malignant medicine membrane metastasis mhc molecules natural peptide presentation presenting prevention programmed protein receptor regulation signal stimulation system therapy transduction white