An allergen is a type of antigen that produces an abnormally vigorous immune response in which the immune system fights off a perceived threat that would otherwise be harmless to the body. Such reactions are called allergies. In technical terms, an allergen is an antigen capable of stimulating a type-I hypersensitivity reaction in atopic individua...Found on http://en.wikipedia.org/wiki/Allergen
<immunology> An antigenic substance capable of producing immediate type hypersensitivity reaction (allergy). ... (06 Oct 1997) ... Found on http://www.encyclo.co.uk/local/20973
(allergy + -gen) a antigenic substance capable of producing immediate-type hypersensitivity (allergy).Found on http://users.ugent.be/~rvdstich/eugloss/DIC/dictio04.html
(al´әr-jen) a substance, protein or nonprotein, capable of inducing allergy or specific hypersensitivity. a purified protein, most often of a food (such as milk, eggs, or wheat), a bacterium, or pollen, used to test a patient for hypersensitivity to specific substances (see skin test). Allergens may ...Found on http://www.encyclo.co.uk/local/21001
any substance that can cause an allergyFound on https://www.encyclo.co.uk/local/20974
Plural form: allergens. Substances that cause an allergic reaction
Example: Dust, peanuts and cat hair are all common allergens.
Found on http://www.bbc.co.uk/skillswise/glossary/
A substance that can produce an allergic reaction. Found on http://www.cat-world.com.au/glossary
a substance that causes an allergic reaction Found on http://www.medichecks.com/glossary.cfm?ltr=A
A substance that causes an allergic reaction in individuals sensitive to it. Found on https://www.encyclo.co.uk/local/20094
A substance that causes an allergic response. Examples include pollen, molds, and certain foods.Found on http://www.cancer.gov/dictionary?expand=A
A substance that causes an allergy.
Found on http://www.gadsbywicks.co.uk/uploaded/3822.pdf
A substance that causes the body to react hypersensitively to it
Found on http://www.i-sis.org.uk/Glossary.php
A substance that is foreign to the body and can cause an allergic reaction in certain people. For examples, pollen, dander, mold.Found on http://www.emedicinehealth.com/allergy_insect_sting/glossary_em.htm
A substance that provokes an allergic response.Found on http://www.superglossary.com/Glossary/Health/Vitamins/
A substance which, when introduced into the body most often through being eaten, inhaled or skin contact, provokes an allergic state in sensitive individuals. E.g. pollen
Found on http://www.dwp.gov.uk/medical/med_conditions/glossary.html
A substance, such as pollen or pet dander, that causes an allergy.Found on http://www.apluspetgoods.com/petsupplies/dog-glossary.php
allergen A substance that is foreign to the body and can cause an allergic reaction in certain people; examples include: pollen, dander, mold; ragweed pollen is the allergen which causes hay fever.Found on http://www.wordinfo.info/words/index/info/view_unit/84/
Allergen is a substance that causes an allergic reaction.Found on https://www.goodsalonguide.com/community/hair-and-beauty-glossary
Allergen: A substance that is foreign to the body and can cause an allergic reaction in certain people. For examples, pollen, dander, mold.Found on http://www.medterms.com/script/main/art.asp?articlekey=2194
An allergen is a normal substance that causes an acute defensive reaction in a person's immune system. Common allergens are pet dander, smoke, and pollen, although the list of possible allergens is long and varied. When a person has a reaction to an allergen that person is said to be allergic to it.Found on https://www.rabbitair.com/pages/air-purifier-glossary
An allergen is a substance that reacts with the body's immune system and causes an allergic reaction.
Found on http://www.nhs.uk/Conditions/Pages/hub.xhtml
An allergen is something that produces an allergic reaction.Found on http://www.make-upusa.com/articles/cosmeticterms.htm
An allergen is something that produces an allergic reaction.Found on http://www.sherrayorganiccosmetics.com/did-you-know/beauty-skincare-glossar
An antigen responsible for producing allergic reactions by inducing IgE formation.
Found on http://www.encyclo.co.uk/local/21016
An antigen that causes allergy.Found on http://www.roitt.com/glossary.asp
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