antigen

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an·ti·gen

 (ăn′tĭ-jən) also an·ti·gene (-jēn′)
n.
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·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 ?
Finally, a third approach, the Risk of Ovarian Cancer Algorithm (ROCA), also employs a mathematical CA 125 trend model with increased frequency (measurement of CA 125 every 3 months).
CA 125 Optional for epithelial can be considered in cell types; recommended some cases of advanced for nonepithelial cell endometrial cancer with types prior peritoneal disease Genetic testing Consider evaluation for BRCA testing for all Lynch syndrome, epithelial ovarian, particularly for women primary peritoneal, older than 60 years fallopian tube cancers Special Weight management Management of sequelae considerations counseling and other and toxicities of lifestyle modifications prior chemotherapy Cervical cancer Vulvar cancer History and Symptom assessment, Symptom assessment, physical exam pelvic exam with vulvar inspection ( speculum and acetic acid), pelvic rectovaginal exam exam with speculum and rectovaginal exam.
Results: The statistical analysis did not indicate any statistically significant difference between the CA 125 levels of the patients with malignant and benign adnexal masses (p=0.
Women cannot be screened for CA 125 levels until 35, but Janet argues this age limit should be lowered.
Irritable bowel-type symptoms and/or raised CA 125 levels do not necessarily mean you have ovarian cancer, as both of these can also be caused by other more benign conditions.
80% of ovarian cancer CA- 125 positive and 30%-50% of patients with stage 1 ovarian cancer present with negative CA 125.
Almost 50,000 women had their CA 125 levels tracked over time to assess their risk of getting ovarian cancer.
How to interpret serum CA 125 levels in patients with serosal involvement?
Serum CEA CA 19-9 and CA 125 levels were determined with the upper limit of normal defined as 5ng/ml for CEA 38U/ml for CA 19-9 and 35U/ml for CA 125.
CA 125 is raised in ovarian cancer as well as other situations such as during menstruation, pregnancy, benign ovarian cysts and endometriosis.
However, little is known about HE4 diagnostic specificity in other benign and malignant conditions, and it is important to consider potential false-positive results observed with other tumor markers suggested for use in ovarian cancer, such as CA 125 (2-4, 7-17).
Tumor Marker Control is intended for use as an assayed control serum to monitor the precision of laboratory-testing procedures for the analysis of AFP, CA 15-3, CA 19-9, CA 125, CEA, Ferritin, HE4, PSA, and Free PSA.