ACCT 210 Lecture Notes - Lecture 20: Antigen, Phagocytosis, Stem-Loop
12 Jul 2020
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Document Summary
In the absence of adaptive immune response, we cannot survive. There are two types of t cells; t helper cells and cytotoxic t cells. The adaptive immune cell also tries to minimise damage to healthy cells. Principles of clonal selection: each lymphocyte has a single type of receptor with a unique specificity, each lymphocyte bears multiple of the same receptor, cells that have receptors for self-molecules are deleted from the repertoire. B lymphocytes: neutralise toxins and viruses, help in the phagocytosis of pathogens, destruction of bacteria and viruses, can also act as an antigen presenting cell to activate t cells. Immunoglobulins exist in two forms; as a membrane receptor that binds antigen (bcr) or as a secreted, fluid phase molecule that directs a specific immune function. Immunology and infection allison green: complement fixation, opsonisation, neutralisation. There are five types of heavy chain; igm, igg, igd, iga and ige. There are two types of light chains (kappa and lambda).
