Description: Stability and Storage:The stability of ELISA kit is determined by the loss rate of activity. The loss rate of this kit is less than 10% prior to the expiration date under appropriate storage condition. Detection method:Colorimetric Sample type:Plasma, Serum Assay type:Quantitative Sensitivity:0.156 μg/ml Range:0.31-5 μg/mL Recovery:80-120% Background:Durvalumab (dur val" ue mab) is a human recombinant monoclonal IgG1 kappa-isotype antibody to the ligand for programmed cell death receptor-1 (PD-L1) which leads to enhanced T cell responses against cancer cells and is used in cancer immunotherapy. PD-1 is an important checkpoint molecule that modulates and down regulates T cell responses. Inhibition of the PD-L1 prevents its binding to the programmed cell death receptor 1 which is responsible for down regulating T cell responses. Inhibition of this pathway allows for a continued activation and proliferation of T cells. The subsequent enhancement of cytotoxic reactivity may play a beneficial role in cancer immunotherapy by breaking immunological tolerance to cancer cell neo-antigens. In several large multicenter studies, durvalumab therapy resulted in a prolongation of survival in patients with advanced, metastatic or unresectable urothelial carcinoma, and a proportion of patients had a long term remission. Shipping:2-8 ℃ Specifications:Durvalumab Note:For Research Use Only.