Due to which of the following reasons is allergy caused?

Options :
  1. inflammation of upper respiratory tract
  2. inhalation of pollens
  3. introduction of foreign material in the body
  4. antigen - antibody reaction


Answer and Explanation :-

Answer: Option 4

Explanation:

Sorry there is no explanation for this answer. Please help others by posting your response below

How do you rate this queston?  Very Easy  Easy  Average  Above Average  Tough

Previous Question : Due to which of the following reasons does heart attack occur?

Next Question : Approximately what percentage of the total calcium present in the human body is in the blood?

Click here for online test on General Science

Responses


 (Getemail alerts when others member replies)







Miracles don't happen. You make them happen. They're not wishes or dreams or candles on a cake. They're not impossible. Reality is real. It's totally and completely under my control.
-Julie Anne Peters Far from Xanadu