question_answer 76)

  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 betaken to avoid such reactions.

Answer:

                  If a person is hypersensitive to certain substance present in the air, he may be allergic to it, Mast cells release certain chemicals, e.g., histamine and serotonin, in response to this substance, that result in allergic reaction. Precaution taken to prevent such reaction is to avoid the allergens responsible for particular allergy.