Arthus reaction

In immunology, the Arthus reaction (/ˌɑːrˈtjs/) is a type of local type III hypersensitivity reaction. Type III hypersensitivity reactions are immune complex-mediated, and involve the deposition of antigen/antibody complexes mainly in the vascular walls, serosa (pleura, pericardium, synovium), and glomeruli. This reaction is usually encountered in experimental settings following the injection of antigens.

Arthus reaction
SpecialtyEmergency medicine 
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