An oncology nurse is providing for an adult patient who is currently immunocompromised. The nurse is aware of the physiology involved in hematopoiesis and immune function, including the salient role of cytokines
What is the primary role of cytokines in maintaining homeostasis? A) Cytokines perform phagocytosis in response to bacterial and protozoal infection.
B) Cytokines perform a regulatory role in the development of diverse blood cells.
C) Cytokines can be considered to be the basic "building blocks" of all blood cells.
D) Cytokines are formed in response to the presence of antibodies.
B
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Hematopoietic cytokines are diverse substances produced mainly by bone marrow and white blood cells (WBCs). They regulate many cellular activities by acting as chemical messengers among cells and as growth factors for blood cells. Blood cells are not made up of cytokines, and they do not perform phagocytosis. The presence of antigens, not antibodies, can prompt the expression of certain cytokines.
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