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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
The major contribution of the amniotic fluid after 20 weeks of gestation is :
assistant
The correct answer is  After 20 weeks as the fetal skin becomes keratinized process of diffusion is impaired. In the second half of pregnancy, the fetal kidneys become active and thereafter fetal urine becomes the main source of amniotic fluid. (refer pg no:211 Sheila 2nd edition)