antigen(redirected from K a's)
Also found in: Thesaurus, Medical, Encyclopedia.
an·ti·gen(ăn′tĭ-jən) also an·ti·gene (-jēn′)
A molecule that is capable of binding to an antibody or to an antigen receptor on a T cell, especially one that induces an immune response. An antigen is usually a foreign substance, such as a toxin or a component of a virus, bacterium, or parasite.
an′ti·gen′ic (-jĕn′ĭk) adj.
an′ti·ge·nic′i·ty (-jə-nĭs′ĭ-tē) n.
antigen(ˈæntɪdʒən; -ˌdʒɛn) or
(Biochemistry) a substance that stimulates the production of antibodies
[C20: from anti(body) + -gen]
an•ti•gen(ˈæn tɪ dʒən, -ˌdʒɛn)
1. any substance that can stimulate the production of antibodies and combine specifically with them.
2. any commercial substance that, when injected or absorbed into animal tissues, stimulates the production of antibodies.
3. antigens of a particular type collectively.
an`ti•ge•nic′i•ty (-dʒəˈnɪs ɪ ti) n.
A substance that stimulates the production of an antibody when introduced into the body. Antigens include toxins, bacteria, viruses, and other foreign substances. See Note at blood type.
A molecule recognized as foreign by the body’s immune system, causing the release of antibodies.
Switch to new thesaurus
|Noun||1.||antigen - any substance (as a toxin or enzyme) that stimulates an immune response in the body (especially the production of antibodies)|
substance - a particular kind or species of matter with uniform properties; "shigella is one of the most toxic substances known to man"
immunizing agent, immunogen - any substance or organism that provokes an immune response (produces immunity) when introduced into the body
immunology - the branch of medical science that studies the body's immune system
agglutinogen - any substance that acts as an antigen to cause agglutinin production
fetoprotein, foetoprotein - any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
anatoxin, toxoid - a bacterial toxin that has been weakened until it is no longer toxic but is strong enough to induce the formation of antibodies and immunity to the specific disease caused by the toxin; "diphtheria toxoid"
antigenic determinant, epitope, determinant - the site on the surface of an antigen molecule to which an antibody attaches itself
antigen[ˈæntɪdʒən] N → antígeno m
n → Antigen nt
antigen[ˈæntɪdʒən] n → antigene m
n. antígeno, sustancia tóxica que estimula la formación de anticuerpos;
carcinoembriogenic ___ → ___ carcinoembriogénico.