Immediate Hypersensitivity:

Terms Related to Immediate Hypersensitivity

• PCA

  An evanescent cutaneous reaction occurring when antibody is injected into a local area on the skin and antigen is subsequently injected intravenously along with a ...

• Histamine H1 Receptor

  A class of histamine receptors discriminated by their pharmacology and mode of action. Most histamine H1 receptors operate through the inositol phosphate/diacylglycerol second messenger system. ...

• Hypersensitivity

  Altered reactivity to an antigen, which can result in pathologic reactions upon subsequent exposure to that particular antigen.

• Anaphylactic Reaction

  An acute hypersensitivity reaction due to exposure to a previously encountered antigen. The reaction may include rapidly progressing urticaria, respiratory distress, vascular collapse, systemic shock, ...

• H1 Receptors

  A class of histamine receptors discriminated by their pharmacology and mode of action. Most histamine H1 receptors operate through the inositol phosphate/diacylglycerol second messenger system. ...

• Anaphylaxis

  An acute hypersensitivity reaction due to exposure to a previously encountered antigen. The reaction may include rapidly progressing urticaria, respiratory distress, vascular collapse, systemic shock, ...