White blood cells are an important part of the human immune response. Two types of white
blood cells, neutrophils and macrophages, act as phagocytes. Phagocytes perform which of
Che following functions in the human body?
1 Point)
A. They produce antibodies.
B. They bind to antigens and develop into plasma cells.
C. They form a barrier against pathogens.
D. They engulf and destroy bacteria.