Natural killer cells
A. are phagocytes that attack and kill pathogenic microorganisms.
B. attack virus-infected cells by releasing chemicals that lead to cell death.
C. tag pathogenic microorganisms with antibodies.
D. “eat” microorganisms that have been tagged with antibodies.
Answer:B
Natural killer cells
A. are phagocytes that attack and kill pathogenic microorganisms. B. attack virus-infected cells by releasing chemicals that lead to cell death. C. tag pathogenic microorganisms with antibodies. D. “eat” microorganisms that have been tagged with antibodies.