Of the following, which is part of the body's second line of defense?
A) mucous cells
B) germ cells
C) lymphocytes
D) natural killer cells
E) None of these choices.

Name: Of the following, which is part of the body's second line of defense? A) mucous cells B) germ cells C) lymphocytes D) natural killer cells E) None of these choices.
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Question

Quizplus · Accepted Answer

Natural killer cells are part of the body's second line of defense, which includes non-specific immune responses to pathogens.

Of the Following, Which Is Part of the Body's Second