Facts About Allergies » b cells http://www.allergydot.com What to do About Allergies and Allergic Reactions Thu, 26 Jan 2012 23:46:06 +0000 en hourly 1 How the Immune System Responds to Allergies http://www.allergydot.com/2008/03/06/how-the-immune-system-responds-to-allergies/ http://www.allergydot.com/2008/03/06/how-the-immune-system-responds-to-allergies/#comments Thu, 06 Mar 2008 15:04:46 +0000 Alank http://www.allergydot.com/2008/03/06/how-the-immune-system-responds-to-allergies/ An allergy is the result of an overreaction by the body's immune system in the presence of an allergen. However, how does that work, exactly? Knowing how the immune system responds to allergies will help you to  understand what is happening when you suffer that runny nose, itchy rash or stomach upset.

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