Hypersensitivity
Hypersensitivity, also known as allergic reaction, is the process of immune response to molecular removal of foreign antigens, these molecules induce a slight, no clinical symptoms or local inflammatory response, and will not cause tissue damage to the host The In exceptional circumstances, the inflammatory response may lead to significant tissue damage or even death, and such immune responses are called hypersensitivity hypersensitivity or allergy. Most of the hypersensitivity is caused by the production of IgE antibodies by individual stimulation of innocuous antigens or allergens. Allergy symptoms can be developed by the humoral or cellular immune response. Humoral hypersensitivity: initiated by an antibody or antigen-antibody complex, and a particular vehicle: IgE, IgM, IgG or complement, etc., to adjust the hypersensitivity, cause the susceptible host to take a few minutes after accidentally contacting the antigen or A few hours to produce clinical symptoms, the most obvious example is immediate hypersensitivity. TDTH cell media hypersensitivity: delayed hypersensitivity, is a cellular regulatory response, a delay in the onset of a host for several days after the antigen. Delayed hypersensitivity is an important defense front for the fight against intracellular pathogens, but they can sometimes cause serious tissue damage. ...