While caring for a pediatric client admitted with a viral infection, the nurse knows that which type of cell will be the child's primary defense against the virus?
A) Complement
B) Bradykinin
C) Leukotrienes
D) Natural killer (NK) cells
Ans: D
Feedback:
The third type of lymphocyte, the natural killer (NK) cell is part of the innate immune system and may be the first line of defense against viral infections. The NK cell also has the ability to recognize and kill tumor cells, abnormal body cells, and cells infected with intracellular pathogens, such as viruses and intracellular bacteria. Complement is activated in the inflammatory response. Leukotrienes and bradykinin are also a part of the inflammatory response.
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