antigen
A substance inducing and reacting in an immune response. Normally antigens have molecular weights greater than about 1 kD. The antigenic determinant group is termed an epitope and the association of this with a carrier molecule (that may be part of the same molecule) makes it active as an antigen. Thus dinitrophenol-modified human serum albumin is antigenic to humans, dinitrophenol being the hapten. Usually antigens are foreign to the animal in which they produce immune reactions.

Dictionary of molecular biology. 2004.

Look at other dictionaries:

  • antigen — ANTIGÉN s.n. Substanţă de natură proteică, determinând, la introducerea în organism, apariţia unui anticorp. – Din fr. antigène. Trimis de ana zecheru, 13.09.2007. Sursa: DEX 98  antigén s. n., pl. antigéne Trimis de siveco, 26.05.2005. Sursa:… …   Dicționar Român

  • antigen — (n.) substance that causes production of an antibody, 1908, from Ger. Antigen, from Fr. antigène (1899), from anti (see ANTI (Cf. anti )) + Gk. gen (see GEN (Cf. gen)) …   Etymology dictionary

  • antigen — antigen. См. антиген. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • antigen — àntigēn m DEFINICIJA biol. bilo koja supstanca koja u određenim uvjetima može inducirati specifičan imunološki odgovor i potaknuti stvaranje protutijela i senzibiliziranih T limfocita, s kojima onda reagira ETIMOLOGIJA anti + gen …   Hrvatski jezični portal

  • antigen — ► NOUN ▪ a harmful substance which causes the body to produce antibodies. DERIVATIVES antigenic adjective …   English terms dictionary

  • antigen — ☆ antigen [an′tə jən, an′təjen΄ ] n. [ ANTI + GEN] a protein, toxin, or other substance of high molecular weight, to which the body reacts by producing antibodies antigenic [an΄tijen′ik] adj …   English World dictionary

  • Antigen — Each antibody binds to a specific antigen; an interaction similar to a lock and key. An antigen is a foreign molecule that, when introduced into the body, triggers the production of an antibody by the immune system. The immune system will then… …   Wikipedia

  • Antigen — Antigene (engl. für Antibody generating) sind Stoffe, an die sich Antikörper und bestimmte Lymphozyten Rezeptoren spezifisch binden können (wobei letzteres in der Regel bewirkt, dass die Produktion von Antikörpern gegen das Antigen angeregt wird) …   Deutsch Wikipedia

  • antigen — antigenic /an ti jen ik/, adj. antigenically, adv. antigenicity /an ti jeuh nis i tee/, n. /an ti jeuhn, jen /, n. 1. Immunol. any substance that can stimulate the production of antibodies and combine specifically with them. 2. Pharm. any… …   Universalium

  • Antigen — An|ti|gen 〈n. 11; Biochem.〉 artfremder Eiweißstoff, der im Blut von Mensch u. Tier die Bildung von Antikörpern anregt [<grch. anti „gegen“ + genos „Art, Geschlecht“] * * * An|ti|gen [Kurzw. aus Antisomatogen (↑ anti griech. sõma = Körper; ↑… …   Universal-Lexikon

  • antigen — UK [ˈæntɪdʒ(ə)n] / US [ˈæntɪdʒən] noun [countable] Word forms antigen : singular antigen plural antigens medical a harmful substance that causes your body to produce antibodies to fight it …   English dictionary

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