Term Name:	type I hypersensitivity
Synonyms:	immediate hypersensitivity response
Definition:	An inflammatory response driven by antigen recognition by antibodies bound to Fc receptors on mast cells or basophils, occurring within minutes after exposure of a sensitized individual to the antigen, and leading to the release of a variety of inflammatory mediators such as histamines.
Ontology:	GO: Biological Process [GO:0016068]    QuickGO    AmiGO