/al"euhr jeuhn, -jen'/, n. Immunol.
any substance, often a protein, that induces an allergy: common allergens include pollen, grasses, dust, and some medications.
[1910-15; ALLER(GY) + -GEN]

* * *

      substance that in some persons induces the hypersensitive state of allergy and stimulates the formation of reaginic (reagin) antibodies (antibody). Allergens may be naturally occurring or of synthetic origin and include pollen, mold spores, dust, animal dander, insect debris, foods, blood serum, and drugs. Identification of allergens is made by studying both the site of symptoms (e.g., inhalants such as molds, pollens, and dander usually affect the eyes, nose, and bronchi; cosmetics often affect the skin of the face and hands) and the time that symptoms appear (e.g., seasonal allergy to pollen). See also antigen; reagin.

* * *

Universalium. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Allergen — (n) eng allergen, sensitiser, sensitising agent …   Arbeitssicherheit und Gesundheitsschutz Glossar

  • allergen — (n.) substance causing allergy, 1912, from ALLERGY (Cf. allergy) on model of ANTIGEN (Cf. antigen) …   Etymology dictionary

  • allergen — [n] irritant antigen, dander, dust mite, foreign substance, immune trigger, irritant, pollen, ragweed; concept 478 …   New thesaurus

  • allergen — ► NOUN ▪ a substance that causes an allergic reaction …   English terms dictionary

  • allergen — ☆ allergen [al′ər jən, al′ərjen΄ ] n. [Ger < allergie, ALLERGY + gen, GEN] a substance inducing an allergic state or reaction allergenic [al΄ərjen′ik] adj …   English World dictionary

  • Allergen — An allergen is any substance that can cause an allergy. In technical terms, an allergen is a non parasitic antigen capable of stimulating a type I hypersensitivity reaction in atopic individuals.[1] Most humans mount significant Immunoglobulin E… …   Wikipedia

  • Allergen — Ein Allergen (griechisch αλλεργενικό – das allergieerzeugende) ist eine Substanz, die über Vermittlung des Immunsystems Überempfindlichkeitsreaktionen auslöst. Ein Allergen ist ein Antigen, die von ihm verursachte Überempfindlichkeitsreaktion des …   Deutsch Wikipedia

  • Allergen — A substance that is foreign to the body and can cause an allergic reaction in certain people. For examples, pollen, dander, mold. * * * Term for an antigen that induces an allergic or hypersensitive response. [allergy + G. gen, producing] * * *… …   Medical dictionary

  • allergen — UK [ˈælə(r)ˌdʒen] / US [ˈælərdʒən] noun [countable] Word forms allergen : singular allergen plural allergens medical a substance that produces an allergic reaction in someone …   English dictionary

  • allergen — [[t]æ̱lə(r)ʤen[/t]] allergens N COUNT An allergen is a substance that causes an allergic reaction in someone. [TECHNICAL] …   English dictionary

  • allergen — n. any antigen that causes allergy in a hypersensitive person. Allergens are diverse and affect different tissues and organs. Pollens, fur, feathers, mould, and dust may cause hay fever; house dust mites (see Dermatophagoides) have been… …   The new mediacal dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”