What is the primary function of leukocytes as a whole?
a. Make antibodies
b. Engulf bacteria
c. Kill parasites
d. Defend body from nonself agents
ANS: D
Each white cell plays a different primary role in defending the body against nonself agents. Granulocytes are the primary defense against bacteria; eosinophils kill parasites; and plasma cells, which are fully differentiated B cells, make antibodies.
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