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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.
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In a fetus highest O2 concentration found in
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The correct answer is  Highest o2 concentration umblical vien > ivc > svc> =ra=rv > umblical aery Reference: GHAI Essential pediatrics, 8th edition