Physiology Erythropoietin is/are produced by A Juxtaglomerular cells B Interstitial cells of the peritubular capillary bed of the kidneys C Pars recta of PCT D Macula densa 💡 Explanation Erythropoietin is/are produced by ✓ Correct Answer: B. Interstitial cells of the peritubular capillary bed of the kidneys