Multiple Choice
Which of the following statements about cell-mediated immunity (CMI) is NOT true?
A) Deficiencies in CMI result in susceptibility to infections by viruses and intracellular bacteria.
B) CMI can be adoptively transferred by injecting serum from one individual to another.
C) Delayed-type hypersensitivity (DTH) is not a protective response against intracellular bacteria such as Mycobacterium tuberculosis.
D) The principal form of CMI that protects against viral infections is mediated by CD8⁺ cytolytic T lymphocytes.
E) Phagocytes are essential in the effector phase of CMI responses to bacteria such as Listeria monocytogenes.
Correct Answer:

Verified
Correct Answer:
Verified
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