August 30, 2023

Cell-mediated immunity is an immune response that does not involve antibodies or complement, but rather involves the activation of macrophages, natural killer cells, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen. Historically, the immune system was separated into two branches, cellular immunity; for which the protective function of immunisation

Human insulin was the first recombinant-derived product. It is used for the treatment of diabetes. Fredrick Sanger and his co-worker identified the insulin structure stating that it is made up of two polypeptide chains of A and B with a total 51 amino acid units (21 in A-chain and 30 in B-chain) held by disulphide