# Erythropoietin is produced and released by ?
A. Glomerular capillaries
B. Proximal tubular cells
C. Peritubular capillary lining cells of kidney
D. All of the above
The correct answer is C. Peritubular capillary lining cells of kidney.
Physiologic regulator of RBC production, glycoprotein hormone EPO, is produced & released by
highly specialized epithelial-like peritubular capillary lining cells within kidney.
Ref: Harrison’s 18th Ed. 448
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