Definition of Antigen

1. Noun. Any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies).

Generic synonyms: Substance
Specialized synonyms: Immunizing Agent, Immunogen, Agglutinogen, Fetoprotein, Foetoprotein, Anatoxin, Toxoid, Rh, Rh Factor, Rhesus Factor
Category relationships: Immunology
Terms within: Antigenic Determinant, Determinant, Epitope
Derivative terms: Antigenic

Definition of Antigen

1. Noun. (immunology) A substance that induces an immune response, usually foreign. ¹

¹ Source: wiktionary.com

Definition of Antigen

1. a substance that stimulates the production of antibodies [n -S]

Medical Definition of Antigen

1. A protein molecule that often protrudes from the surface of a cell that can induce an immune response. The epitope is the part of the molecule that is responsible for this feature, whereas the carrier molecule results in the activity as an antigen. Usually antigens are foreign to the host animal in which they produce a response. (18 Nov 2007)

Lexicographical Neighbors of Antigen

antifungus
antifur
antigag
antigalactagogue
antigalactic
antigalactics
antigalaxies
antigalaxy
antigambler
antigamblers
antigambling
antigaming
antigang
antigangster
antigen (current term)
antigen-antibody complex
antigen-antibody reaction
antigen-binding site
antigen-combining site
antigen-presenting cell
antigen-responsive cell
antigen-sensitive cell
antigen excess
antigen interferon
antigen presentation
antigen processing
antigen shift
antigen unit
antigenaemia

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