Medical Definition Of Allergen

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Allergies - Symptoms and causes - Mayo Clinic

https://www.mayoclinic.org/diseases-conditions/allergies/symptoms-causes/syc-20351497

Allergies occur when your immune system reacts to a foreign substance — such as pollen, bee venom or pet dander — or a food that doesn't cause a reaction in most people. Your immune system produces substances known as antibodies. When you have allergies, your immune system makes antibodies that … See more

Allergen | definition of Allergen by Medical dictionary

https://medical-dictionary.thefreedictionary.com/allergen

allergen. [ al´er-jen] 1. a substance, protein or nonprotein, capable of inducing allergy or specific hypersensitivity. 2. a purified protein of a food (such as milk, eggs, or wheat), …

Allergen Definition & Meaning - Merriam-Webster

https://www.merriam-webster.com/dictionary/allergen

allergen: [noun] a substance (such as pollen) that induces allergy.

Allergy Definition & Meaning - Merriam-Webster

https://www.merriam-webster.com/dictionary/allergy

allergy: [noun] altered bodily reactivity (such as hypersensitivity) to an antigen in response to a first exposure.

Allergen: MedlinePlus Medical Encyclopedia

https://medlineplus.gov/ency/article/002229.htm

An allergen is a substance that can cause an allergic reaction. In some people, the immune system recognizes allergens as foreign or dangerous. As a result, the immune system …

Allergens | definition of Allergens by Medical dictionary

https://medical-dictionary.thefreedictionary.com/Allergens

allergen: [ al´er-jen ] 1. a substance, protein or nonprotein, capable of inducing allergy or specific hypersensitivity. 2. a purified protein of a food (such as milk, eggs, or wheat), …

Allergies | definition of Allergies by Medical dictionary

https://medical-dictionary.thefreedictionary.com/Allergies

Allergies: Definition Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances. Description Allergies are among the most …

Allergy | definition of allergy by Medical dictionary

https://medical-dictionary.thefreedictionary.com/allergy

al·ler·gy. ( al'er-jē ), 1. Hypersensitivity caused by exposure to a particular antigen (allergen) resulting in a marked increase in reactivity to that antigen on subsequent exposure, sometimes resulting in harmful immunologic …