system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Erythropoetin in fetus is secreted by?
assistant
The correct answer is  Sources of erythropoietin: Fetus: Liver Adult: Interstitial cells in peritubular capillary bed of kidneys (85%). Perivenous hepatocytes in the liver (15%). Brain (protective effect against excitotoxic damage triggered by hypoxia).