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Allergies
Date Submitted: 05/15/2004 17:59:26
Category: / Science & Technology
Length: 3 pages (921 words)
Views: 192607
Allergies what is the true meaning . Allergy, what does it mean . An Allergy is a condition of hypersensitivity to substances that are harmless to most people. The immune system of an allergic person produces antibodies that react with normally harmless substances such as dust , pollen , and certain foods or medicines . The reaction causes the release of chemicals including histamine . Allergies may produce sneezing and running noses , it may also cause contraction of the air passages , …
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