Description_x000D_ General description_x000D_ The antibody pair provided in this kit recognizes human Programmed Cell Death Protein 1._x000D_ Application_x000D_ For research use only. Not for use in diagnostic procedures._x000D_ Please refer to the attached General ELISA KIT Procedure (sandwich, competitive & Indirect ELISA)_x000D_ Biochem/physiol Actions_x000D_ Programmed cell death protein 1 (PDCD1) plays an important role in the immune regulation by acting as a negative co-stimulatory factor. It suppresses the functions and multiplication of T cells, thereby reducing the release of IL-2 (interleukin-2), IL-10 and IFN-γ (interferon γ). In the presence of tumor microenvironment, PDCD1 along with its ligand modulates T effector functioning, thereby protecting cancer cells from immune-associated rejection. Mutation in this gene is associated with symptoms and progression of multiple sclerosis and susceptibility to systemic lupus erythematosus._x000D_ Other Notes_x000D_ A sample Certificate of Analysis is available for this product._x000D_ Please type the word sample in the text box provided for lot number.