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Effects of sustained hypoxemia (HOX) on umbilical blood flow and oxygen uptake rates. Umbilical blood flow (A) was measured and used to calculate umbilical (net fetal) oxygen uptake (B), delivery (C), and extraction (D). All rates are expressed relative to fetal weight. Data were analyzed by Student’s t-test. Individual data points with group means ± SE are shown [n = 2 male and 5 female control (CON) fetuses and 3 male and 5 female HOX fetuses].
