NATS 1670 Lecture Notes - Lecture 4: Microorganism, Endothelium, Phagocytosis
10 Aug 2016
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Antibody: protein molecules that bind specifically to an antigen. Vaccine: injecting an antigen in order to activate b cells and memory cells in order to have specific immunity mediated by our own cells. Passive immunization: injection of antibodies that were not opened by our system. Passive immunization: antibody concentration is high after injection and slowly decreased over time. Used in order to deal with urgent situations (snake bite). They do not give you long term immunity. Active immunization: initial inoculation gives low level of antibodies and needs to be repeated by boosters several times (more exposure to same antigen) to last a lifetime. Active immunization: prevention tool for something we are not exposed to get but might be later on. Acquired immunity: active, natural, artifical --> vaccination --> activating your own cells, passive, natural, artificial --> antibodies from someone else --> used as drug. Most damage to cells during infections occur early before symptoms appear.
