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Question

Read the statements and choose the correct option.
I. Secretion of interferons is a physiological barrier of innate immunity.
II. T-lymphocytes are responsible for cell-mediated immunity.
III. Injection given against snake venom is a type of active immunization.
IV. Antibody produced during allergic reactions are of IgA type.

A
I and II alone are correct
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B
II and IV alone are correct
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C
I alone is correct
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D
II and III alone are correct
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E
II option is correct
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Solution

The correct option is E II option is correct
  • Cell-mediated immunity is an immune response that does not involve antibodies.
  • It involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.
  • Hence, T-lymphocytes are responsible for cell-mediated immunity.
  • So, the correct answer is 'II option is correct'.

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