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Johns Hopkins researchers reveal genetic glitch at the root of allergies
"Newly published research by investigators at Johns Hopkins Children's Center and the Johns Hopkins Institute of Genetic Medicine reveals that a faulty genetic pathway already known for its role in some connective tissue disorders is also a potent player in many types of allergies."

What makes some people susceptible to allergies?
"Allergies can often be blamed on mom and dad. The tendency to become allergic is inherited, and the chances that you also will be allergic increase from about 50 percent when one parent is allergic to 75 to 80 percent when both parents have allergies."

Why Are Only Some People Allergic to Some Foods?
"If you are part of the approximately 4 percent of adult Americans who suffer from a food allergy, you might be interested to know why the peanut butter on a sandwich could kill you with one bite, while the jam is harmful only to your waistline."

What causes allergic reactions?
"Whether it's runny, itchy or stuffed, your nose knows what's bothering it. But do you know what's wrong with your nasal passages? Understanding allergies isn't difficult, but it is the first step toward building a healthy alliance with your nose, eyes, lungs, and sinuses."

What Causes Chronic Allergies?
"If you've got allergies, you might wonder what to expect in the long term. Are you stuck with allergy symptoms, or will they get better? Or could they actually get even worse?"

Food allergy
"When you have a food allergy, your immune system mistakenly identifies a specific food or a substance in food as something harmful."

Pollen Allergies: How Does Pollen Cause Allergies?
"Pollen consists of tiny, egg-shaped, powdery grains released from flowering plants, which are carried by the wind or insects and serve to cross-pollinate other plants of the same type for reproductive purposes. When pollen is present in the air, it can land in a person's eyes, nose, lungs and skin and cause an allergic reaction."

Are Allergies Inherited?
"Not exactly -- if you have allergies, that doesn't mean your child is definitely going to have them too."

The production of IgE
"IgE is produced by plasma cells located in lymph nodes draining the site of antigen entry or locally, at the sites of allergic reactions, by plasma cells derived from germinal centers developing within the inflamed tissue."

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