Category: Immunology

Hypersensitivity refers to an exaggerated or unnecessary reaction produced by the host immune system. It is an immunological dysfunction, mainly targeted at innocuous antigens with consequent tissue...

Allergies and autoimmunity are conditions related to the immune system. They occur when antigens activate immune cells. Allergies and autoimmune diseases follow a similar developmental way, though...

Type III hypersensitivity reaction is an abnormal immune response mediated by the formation of antigen-antibody complexes or immune complexes. In general, hypersensitivity means an inappropriate or...

Hypersensitivity is a body's response to a particular substance in an exaggerated way, which does not happen in normal cases. Hypersensitivity type IV is different from the rest of the other types of...

Unlike Type I hypersensitivity, Type II hypersensitivity reaction is an immediate reaction, showing a "hyper" or exaggerated response to harmless antigens within 24 hours. Type II hypersensitivity...

Various diseases result from inappropriate and immediate immune responses to common environmental components which are otherwise not harmful. Scientists Coombs and Gell have classified such responses...