Dictionary > Hapten

Hapten

Definition
noun, plural: haptens
A substance that induces immune response when bound to a carrier protein or to large antigenic molecule.
Supplement
Hapten is a type of antigen that elicits production of antibodies only when combined with another antigenic molecule, such as immunogen. It can however react with previously existing antibodies.
A well known example of a hapten is urushiol, which is the toxin found in poison ivy.
Word origin: German : Greek haptein, to fasten + German -en, n. suff. (from Greek -ēnē, -ene).
Variant: haptene

Also called: partial antigen or incomplete antigen
See also: immunogen, antigen.
Related terms:

  • Hapten inhibition of precipitation
  • Forssman hapten


You will also like...

Thermographic image of face and neck
Regulation of Organic Metabolism, Growth and Energy Balance

The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..

Birth Control and Contraception
Birth Control and Contraception

Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..

Still freshwater and plants
Still Freshwater & Plants

Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..

squirrel
Animal Water Regulation

Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

Biosecurity and Biocontrol
Biosecurity and Biocontrol

This lesson explores the impact of biosecurity threats, and why they need to be identified and managed. Examples to incl..

3D rendering of an antibody
Passive and Active Types of Immunity

Lymphocytes are a type of white blood cell capable of producing a specific immune response to unique antigens. In thi..