The most active phagocytic cells in circulating blood are
A. neutrophils and macrophages.
B. neutrophils and monocytes.
C. lymphocytes and monocytes.
D. monocytes and macrophages.
Answer: B
You might also like to view...
The movement of air into and out of the lung is called ________
A) Perspiration B) Respiration C) Evacuation D) Ventilation
A substance that induces fever is known as a(n) __________.
A) opsonin. B) acute phase protein. C) pyrogen. D) chemotaxin. E) cytokine.
At the blastocyst stage, the cells are considered
A) pluripotent. B) endodermal. C) extraembryonic. D) totipotent.
Which of the following are TRUE of class I major histocompatibility complex (MHC) molecules?
A) Class I MHC molecules are only present on erythrocyte surfaces. B) Class I MHC molecules present exogenous antigens. C) Class I MHC molecules bind complement. D) Class I MHC molecules present endogenous antigens.