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Multiple Choice Questions « Return to contents list Chapter 2, Question 1.1. You enter a dusty room, feel an itch in your nose, and sneeze. This is an example of the operation of which of the following innate immune mechanism? a. the released granular contents of your granulocytes. b. the low pH of the environment. c. the physical barrier produced by hairs. d. phagocytosis by macrophages. e. mucus combined with the movement of cilia of the lining cells.
