Define allergy or hypersensitivity.

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Solution

Allergies are the reactions or the response given to the antigens which are in the form of particles. Allergy is also termed as hypersensitivity. The substances which can cause allergies are called as allergens. Generally, allergy is caused due to the pollens, dust, hay, etc. IgE antibodies are produced during allergic reactions. Histamine is released by certain cells which causes reddening and inflammation during allergies. A common example of allergy is asthma.

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Q. Define allergy.

Q. Define Allergy. Give any two symptoms of Allergic reactions.

Q. Hypersensitivity towards any foreign material or particle is known as :

Roy had visited a garden consisting of nearly 400 types of flowering plants. However, the moment he reached this garden of flowers, he began showing acute manifestation of pollen allergy.

On the basis of the above scenario, complete the statement by filling in the blanks.

___A____ is released from the mast cells in allergic reaction and ___B___ immunoglobulin is responsible for the allergic and hypersensitivity reaction.

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