IsomerismHeterotaxy SyndromeHeart Defects, CongenitalHeart AtriaSitus InversusHeart Septal DefectsAbnormalities, MultipleVenae CavaeDextrocardiaCell Adhesion MoleculesLevocardiaHeart Bypass, RightPulmonary VeinsErythrocruorinsModels, MolecularPulmonary Veno-Occlusive DiseaseMolecular Sequence DataGrowth Differentiation Factor 1Fetal HeartAmino Acid SequenceCyanosisAbortion, EugenicProtein ConformationMagnetic Resonance SpectroscopyMolecular StructureSmall Molecule LibrariesProtein BindingNodal ProteinAtrioventricular NodeBinding SitesFetal DiseasesVena Cava, InferiorKineticsStereoisomerismBase SequenceCrystallography, X-RayCell LineFontan ProcedureAzygos VeinSignal TransductionNeural Cell Adhesion MoleculesTachycardia, SupraventricularSinoatrial NodeProlineCells, CulturedHeart BlockStructure-Activity RelationshipUltrasonography, PrenatalHeart ValvesIntercellular Adhesion Molecule-1Molecular ConformationLigandsAtrial AppendageAntibodies, MonoclonalProtein Structure, TertiaryHeart Septal Defects, AtrialWaterHydrogen BondingRecombinant ProteinsPeptidesCell AdhesionPregnancyPrenatal DiagnosisSpectrometry, Mass, Fast Atom BombardmentInfant, NewbornBody PatterningAntigens, CDMolecular WeightDNASyndromeTime FactorsEscherichia coliProteinsSpleenNucleic Acid ConformationPeptide FragmentsMutationMice, Inbred C57BLMembrane ProteinsHistocompatibility Antigens Class IT-LymphocytesMembrane GlycoproteinsHistocompatibility Antigens Class IIThermodynamicsVascular Cell Adhesion Molecule-1Models, BiologicalCell MembraneRNA, MessengerElectrophoresis, Polyacrylamide GelX-Ray DiffractionEchocardiographyCrystallizationNeural Cell Adhesion Molecule L1TransfectionBacterial ProteinsSequence Homology, Amino AcidLymphocyte ActivationCloning, MolecularMacromolecular SubstancesRecombinant Fusion Proteins