Allergy

Written By: Admin | Published : September 7, 2012 5:20 PM IST

An allergy refers to hypersensitivity of the immune system to various substances (allergens) in the environment. What sets allergies apart from general aversion is the over-activation of white blood cells (cells that fight infections). During an allergy, the white blood cells overtly react to external substances and trigger the body s immune system. These reactions can range from mildly uncomfortable to life threatening.

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Allergy

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