What is histamine?what are the entry routs of allergens?
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Answer:
There are three entry routes of allergen
1. nose
2. Mouth
3. Skin
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Answer: Histamine causes many of the symptoms of allergies, such as a runny nose or sneezing. When a person is allergic to a particular substance, such as a food or dust, the immune system mistakenly believes that this usually harmless substance is actually harmful to the body. The entry routes are:
1}Skin
2}Mouth
3}Nose
Explanation:
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