Fetusalpha-FetoproteinsPregnancyFetal ProteinsEnergy MetabolismLipid MetabolismMetabolismGlucoseLiverBiotransformationMicrosomes, LiverCytochrome P-450 Enzyme SystemGlycolysisOxidation-ReductionMetabolic Networks and PathwaysMetabolism, Inborn ErrorsFatty AcidsChromatography, High Pressure LiquidKineticsOxygen ConsumptionCarbon Isotopes