This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
[{'content': 'Erythropoietin in kidney is secreted by \nSelect and explain. \nA. Juxtaglomerular cells, B. PCT cells, C. Interstitial cells in peritubular capillaries, D. Capillaries of glomerulus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Interstitial cells in paritubular capillaries releoses erythroportin in responce to hypoxia.', 'role': 'assistant'}]