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Question
Sometimes due to genetic and other unknown reasons, the body attacks self-cells. This results in damage to the body and is called
Sometimes due to genetic and other unknown reasons, the body attacks self-cells. This results in damage to the body and is called
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Solution
The correct option is D Autoimmunity
Allergy :
Allergy is the exaggerated response of the immune system of the body to certain antigens. It is basically hypersensitivity of the body. The type of antibody produced during allergy is IgE. 
Autoimmunity :
The condition of the body in which the body fails to differentiate between self and non-self cells and start attacking self cells is called autoimmunity.
Examples include rheumatoid arthritis.
Immunisation :
Immunisation is the process by which a person is protected against a disease through vaccination. Examples include OPV (oral polio vaccine) against poliomyelitis.
Contact inhibition :
The process of arresting cell division when the cells come in contact with each other is called contact inhibition.
Final answer :
(b) Autoimmunity
Allergy :
Allergy is the exaggerated response of the immune system of the body to certain antigens. It is basically hypersensitivity of the body. The type of antibody produced during allergy is IgE.
Autoimmunity :
The condition of the body in which the body fails to differentiate between self and non-self cells and start attacking self cells is called autoimmunity.
Examples include rheumatoid arthritis.
Immunisation :
Immunisation is the process by which a person is protected against a disease through vaccination. Examples include OPV (oral polio vaccine) against poliomyelitis.
Contact inhibition :
The process of arresting cell division when the cells come in contact with each other is called contact inhibition.
Final answer :
(b) Autoimmunity
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