Hypersensitivity (type 1 part 1b)

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What is hypersensitivity?
Hypersensitivity reactions are essentially exaggerated response of your immune system in response to a stimulus. There are 4 types (1-4). Hypersensitivity type 1-3 are antibody mediated, while type 4 hypersensitivity is cell mediated. The major differences between them are different antibodies (IgE,IgG or IgM), location of antibodies(fixed or circulating), duration of the reaction (immediate or delayed), type of cell involved (type 4).

What is type 1 hypersensitivity?
Type 1 hypersensitivity mainly describes allergic reactions in which the antibody IgE is the primary mediator. This hypersensitivity give an almost immediate effect, in which the signs and symptoms appear early. Here we see an interaction between APC, T-helper cells, IgE, mast cell and the substances they produce and release.


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Видео Hypersensitivity (type 1 part 1b) канала Sansa Med