Fetal Organ MaturityFetusPregnancyFetal HypoxiaMaternal-Fetal ExchangePlacentaGestational AgeOrgan SizeAutopsyFetal DiseasesBrainEmbryonic and Fetal DevelopmentLiverLungMolecular Sequence DataSheepGene Expression ProfilingAmino Acid SequenceProtein Structure, TertiaryEvolution, MolecularPhylogenyProtein Isoforms