T-lymphocytes recognize antigens and attack microorganisms or transplanted organs and tissues. This effect is called
Correct answer: A. Cell-mediated response
- A. Cell-mediated response
- B. Humoral immune response
- C. Active immunity
- D. Passive immunity
Explanation
T lymphocytes recognize an antigen and then attack microorganisms and the connection to it. Since this occurs cell to cell, it is called a cell-mediated response and opt a is right.
This question appeared on the UHS MDCAT 2014 paper, which you can sit online with every answer explained.
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About Specific Defense Mechanism
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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