Autoimmune diseases act at the principle of:
Correct answer: C. Self against self
- A. Self against antigens
- B. Antigen against self
- C. Self against self
- D. Antigen destroyed
Explanation
Autoimmune disease occurs when a specific adaptive immune response is mounted against self antigens. The normal consequence of an adaptive immune response against a foreign antigen is the clearance of the antigen from the body. The body's white blood cells start attacking the body's tissues and cells.
This question appeared on the NUMS 2020 paper, which you can sit online with every answer explained.
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Specific defense mechanisms provide targeted immunity through B lymphocytes, T lymphocytes, antibodies and memory cells that recognize particular antigens. Questions cover humoral and cell mediated responses, clonal selection, primary and secondary immune responses, vaccination and passive immunity, while distinguishing adaptive defenses from the immediate, non specific innate response.
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