ALLERGEN

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 Dictionary entry overview: What does allergen mean? 

• ALLERGEN (noun)
  The noun ALLERGEN has 1 sense:

1. any substance that can cause an allergy

  Familiarity information: ALLERGEN used as a noun is very rare.

 Dictionary entry details 

• ALLERGEN (noun)

Sense 1

Meaning:

Any substance that can cause an allergy

Classified under:

Nouns denoting substances

Hypernyms ("allergen" is a kind of...):

substance (a particular kind or species of matter with uniform properties)

Hyponyms (each of the following is a kind of "allergen"):

ragweed pollen (pollen of the ragweed plant is a common allergen)

Derivation:

allergenic (relating to or having the effect of an allergen)

 Context examples 

This protein plays a role in the synthesis of leukotrienes from arachidonic acid; thus, it mediates both inflammation and allergen responses.

(Arachidonate 5-Lipoxygenase, NCI Thesaurus)

An acute hypersensitive immune response that occurs from exposure to an allergen.

(Anaphylaxis, NCI Thesaurus)

Inhaled allergens encounter antigen presenting cells (APC) that line the airway.

(Asthma Pathway, NCI Thesaurus/KEGG)

Conjunctivitis due to hypersensitivity to various allergens.

(Atopic Conjunctivitis, NLM, Medical Subject Headings)

Allergic rhinitis with a positive skin prick test (SPT equal or greater than 3 mm) to any allergen.

(Atopic Rhinitis, NCI Thesaurus)

Other mode of actions include an adenosine antagonistic effect on the activity of CD4 lymphocytes and mediator release from mast cells thereby decreasing lung sensitivity to allergens and other substances that cause inflammation.

(Aminophylline, NCI Thesaurus)

An arbitrary unit for the measurement of Amb a 1 (or Antigen E), a 38 kD glycoprotein that is the major allergen in short ragweed pollen allergen extracts.

(Amb a 1 Unit, NCI Thesaurus)

Inflammation of the nasal mucous membranes caused by an IgE-mediated response to external allergens.

(Allergic Rhinitis, NCI Thesaurus)

An inflammatory skin condition caused by an immune response to direct contact between the skin and an allergen.

(Allergic Contact Dermatitis, NCI Thesaurus)

A disorder characterized by an inflammation of the nasal mucous membranes caused by an IgE-mediated response to external allergens.

(Allergic Rhinitis, NCI Thesaurus/CTCAE)