Question : A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.

Question : A person shows strong unusual hypersensitive reactions when

1.	Question : A person shows strong unusual hypersensitive reactions when exposed to certain substances present in the air. Identify the condition. Name the cells responsible for such reactions. What precaution should be taken to avoid such reactions.
Answer» Solution :Allergy. (It is the hypersensitive RESPONSE to the antigens) Mast Cells are responsible for such reactions. To avoid such reactions following precautions MUST be taken: (i) The use of drugs like ANTIHISTAMINE, adrenalin and steroids quickly reduce the SYMPTOMS of allergy.(ii) Avoid CONTACT with substances to which a person is hypersensitive.