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  4. Allergy is due to the release of which of the chemical from mast cells and basophils? A. Histamine B. Heparin C. Serotonin

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Q. Allergy is due to the release of which of the chemical from mast cells and basophils?
A. Histamine
B. Heparin
C. Serotonin

NTA AbhyasNTA Abhyas 2022

Solution:

During an allergic reaction, there is an increased release of histamines and serotonin from mast cells and basophils. As degranulation occurs, it causes the mast cell or basophil to release a series of chemicals that orchestrate the allergic reaction. Within every mast cell or basophil are 500 to 1500 granules containing more than thirty different allergy-causing chemicals. The best-known chemicals that are released is histamine and serotonin.