Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's third line of defense?
A. basophils
B. eosinophils
C. neutrophils
D. monocytes
E. lymphocytes
Answer: E
Which white blood cells comprise 20% to 30% of the circulating WBCs and are the cells that function in the body's third line of defense?
A. basophils
B. eosinophils
C. neutrophils
D. monocytes
E. lymphocytes
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