Immunity brought about by antibodies circulating in the blood and lymph is called
Correct answer: B. humoral immunity
- A. cell mediated immunity
- B. humoral immunity
- C. innate immunity only
- D. autoimmunity
Explanation
Humoral immunity works through soluble antibodies produced by B cells, while cell mediated immunity relies on T cells attacking directly. The two arms cooperate, but examiners keep the definitions strictly apart.
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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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