Multiple Choice
Colony-stimulating factors are cytokines made by
A) endothelial cells.
B) fibroblasts from bone marrow.
C) white blood cells only.
D) endothelial cells and fibroblasts from bone marrow.
E) endothelial cells, fibroblasts from bone marrow, and white blood cells.
Correct Answer:

Verified
Correct Answer:
Verified
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