AmnionChorionExtraembryonic MembranesMembranesMembrane LipidsCell MembraneEgg ProteinsIntracellular MembranesLabor, ObstetricMembrane PotentialsMembranes, ArtificialBombyxAllantoisPregnancyErythrocyte MembraneMembrane FluidityPlacentaBasement MembraneDeciduaCell Membrane PermeabilityFetal Membranes, Premature RuptureVitelline MembraneAmniotic FluidParturitionCells, CulturedMicroscopy, ElectronMembrane Transport ProteinsEgg ShellMembrane GlycoproteinsMolecular Sequence DataAmniotic Band SyndromeBase SequenceLipid BilayersChorioamnionitisCell LineTrophoblastsAmino Acid SequenceOvumMitochondrial MembranesOryziasOogenesisGestational AgeProtein TransportProtein BindingElectrophoresis, Polyacrylamide GelRNA, MessengerSynaptic MembranesSerous MembraneLabor OnsetCulture TechniquesMolecular WeightModels, BiologicalLiposomesYolk SacMutationGene AmplificationCalciumCell FractionationTime FactorsMicroscopy, Electron, ScanningCellulose, OxidizedFluorescent Antibody TechniqueInsect ProteinsProtein Structure, TertiaryCarrier ProteinsHydrogen-Ion ConcentrationDetergents