antigen


Also found in: Thesaurus, Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia.
Related to antigen: carcinoembryonic antigen, Antigen presenting cells

an·ti·gen

 (ăn′tĭ-jən) also an·ti·gene (-jēn′)
n.
A substance that when introduced into the body stimulates the production of an antibody. Antigens include toxins, bacteria, foreign blood cells, and the cells of transplanted organs.

an′ti·gen′ic (-jĕn′ĭk) adj.
an′ti·gen′i·cal·ly adv.
an′ti·ge·nic′i·ty (-jə-nĭs′ĭ-tē) n.

antigen

(ˈæntɪdʒən; -ˌdʒɛn) or

antigene

n
(Biochemistry) a substance that stimulates the production of antibodies
[C20: from anti(body) + -gen]
ˌantiˈgenic adj
ˌantiˈgenically adv

an•ti•gen

(ˈæn tɪ dʒən, -ˌdʒɛn)

n.
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.
[1905–10; anti (body) + -gen]
an`ti•gen′ic, adj.
an`ti•gen′i•cal•ly, adv.
an`ti•ge•nic′i•ty (-dʒəˈnɪs ɪ ti) n.

an·ti·gen

(ăn′tĭ-jən)
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.

antigen

A molecule recognized as foreign by the body’s immune system, causing the release of antibodies.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.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
Rh, Rh factor, rhesus factor - a blood group antigen possessed by Rh-positive people; if an Rh-negative person receives a blood transfusion from an Rh-positive person it can result in hemolysis and anemia
Translations
antigen
antigeeni
antigén
antígeno
antigen
antigen

antigen

[ˈæntɪdʒən] Nantígeno m

antigen

[ˈæntɪdʒən] nantigène manti-hero antihero [ˈæntihɪərəʊ] nantihéros m

antigen

nAntigen nt

antigen

[ˈæntɪdʒən] nantigene m

an·ti·gen

n. antígeno, sustancia tóxica que estimula la formación de anticuerpos;
carcinoembriogenic ______ carcinoembriogénico.

antigen

n antígeno; carcinoembryonic — antígeno carcinoembrionario; prostate-specific — (PSA) antígeno prostático específico (APE)
References in periodicals archive ?
Antigen Express is a private biotechnology company that is developing a range of therapeutics for the treatment of cancer, autoimmune, infectious, and allergic diseases.
It is important to note that the goals of allergy testing and immunotherapy include the accurate identification and quantification of each antigen to which the patient is allergic so that the therapeutic approach can be designed to provide symptom relief in a safe and expedient manner.
Neutralizing antibody: a type of protein produced by B lymphocytes (see above) after stimulation by an antigen; such proteins bind to specific antigens in an immune response and usually counteract or inactivate antigens.
In the sensitized BN rats, we also studied whether, upon renewed oral antigen exposure challenge, clinical reactions could be observed as are those in food-allergic patients upon exposure to the offending food.
Thorough assessment of the potential for selected vaccine antigen delivery technologies
today announced the release of Microsoft(R) Antigen e-mail security products -- including Antigen for Exchange, Antigen for SMTP Gateways, Antigen Spam Manager and Antigen Enterprise Manager -- available to customers July 1, 2006.
In the study, all participants receiving the Cancer Vac immunotherapy generated immune responses that recognized the MUC 1 cancer antigen, with the treatment being well tolerated by all patients.
Increasing concentrations of metal ions, antigen (DNP-HSA), or a combination of both were added in a final volume of 0.
In other words, there is no risk of infection, yet there is high-level antigen expression; problem pathogen antigens (such as those involved in immune evasion) can be removed, or other genes added; and antigens can be easily manipulated using recombinant DNA technologies that are now well established.
Finally, it misses low-sensitivity responses because it cannot detect allergic disease at sensitivities less than the concentration of the antigen placed.
In initial trials, people with lymphoma, melanoma, or prostate cancer who received dendritic cells primed with a known tumor antigen showed strong anticancer immune responses (SN: 1/13/96, p.
The T-cell or lymphocyte, is the cell of the immune system which recognizes the MBP antigen and thus starts the attack.