MicrovilliChorionic VilliChorionic Villi SamplingMicroscopy, Electron, ScanningMicroscopy, ElectronIntestine, SmallIntestinal MucosaJejunumEpitheliumIleumEnterocytesIntestinesDuodenumEpithelial CellsMicrofilament ProteinsCell MembranePlacentaActinsSucraseMicroscopy, ImmunoelectronCytoskeletonPregnancyCytoskeletal ProteinsMicroscopy, Electron, TransmissionTrophoblastsDisaccharidasesImmunohistochemistryFluorescent Antibody TechniqueDigestive SystemSodium-Hydrogen AntiporterSucrase-Isomaltase ComplexIntestinal AbsorptionSwinePhalloidinePregnancy Trimester, FirstKidney Tubules, ProximalHistocytochemistryCiliaCell PolarityPrenatal DiagnosisArachnoidMembrane ProteinsRabbitsIntercellular JunctionsMesomycetozoeaCell LineCytochalasin DAmniocentesisActin CytoskeletonCytochalasinsPigment Epithelium of EyeCaco-2 CellsFreeze EtchingChickensEpendymaPhotoreceptor Cells, InvertebratePhosphoproteinsOvumTime FactorsBacterial AdhesionOlfactory MucosaChoroid PlexusSodium-Phosphate Cotransporter Proteins, Type IICells, CulturedThoriumCloacaCoated Pits, Cell-MembraneAnimals, NewbornMicroscopy, FluorescenceGerm-Free LifeAntigens, CD13Alkaline PhosphataseCarrier ProteinsCell DifferentiationMyosin Type IJejunal DiseasesRats, Inbred StrainsRhodniusEnteritisBiological Transportalpha-GlucosidasesCell AdhesionCytoplasmBasement MembraneGlucagon-Like Peptide 2Intestinal DiseasesPeyer's PatchesVomeronasal OrganCryoultramicrotomyJejunoileal BypassActininBlastomeresPlacentationParietal Cells, GastricAminopeptidasesAgglutinationColonMembrane GlycoproteinsRats, Sprague-DawleyTriatominae