During an allergic reaction, the binding of antigens to IgE antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are

Question

Dr. Abubacker · Accepted Answer

Histamine is released from mast cells during allergic reactions. Histamine can occur in various tissues but is concentrated in connective tissue. It is formed from the amino acids histidine . It causes dilation and increases permeability of small blood vessels, which results in such symptoms as localised swelling, itching, sneezing and runny eyes and nose.

Q. During an allergic reaction, the binding of antigens to IgE antibodies initiates a response, in which chemicals cause the dilation of blood vessels and a host of other physiological changes. Such chemicals are

Explanation

Reviewed by Dr. Abubacker

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