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Asked by charo to Joseph, Bernerd on 12 Jul 2017.
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Joseph Olwendo answered on 12 Jul 2017:
our immune system has an important job to defend our body from invaders such as bacteria and viruses that mean you harm. during this process body allergies is triggered when the cells send out histamine, which causes blood vessels to expand, and other chemicals, and these body reactions always trigger the allergy symptoms.
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Bernerd Fulanda answered on 12 Jul 2017:
Your immune system has an important job: to defend your body from invaders such as bacteria and viruses that mean you harm.
But when it makes war on substances it shouldn’t, that’s an allergy.
Peanuts, eggs, or pollen, for example, can trigger reactions. They are called allergens.
During a reaction, your immune system releases antibodies. These are proteins that deliver a message to cells: Stop that substance! The cells then send out histamine, which causes blood vessels to expand, and other chemicals, and these trigger the allergy symptoms.
These antibodies are singled-minded. Each one targets only one type of allergen. That explains why someone might be allergic to peanuts but not to eggs.
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