Cell NucleusEmbryo, NonmammalianActive Transport, Cell NucleusEmbryo, MammalianNucleus AccumbensNuclear Transfer TechniquesCytoplasmBlastocystMolecular Sequence DataThalamic NucleiGene Expression Regulation, DevelopmentalSolitary NucleusEmbryonic DevelopmentCell LineCell Nucleus ShapeNuclear ProteinsCochlear NucleusCloning, OrganismRaphe NucleiChromatinCell DifferentiationOocytesCells, CulturedAmino Acid SequenceMitosisCerebellar NucleiHeLa CellsSeptal NucleiDNAArcuate NucleusCaudate NucleusTranscription FactorsParaventricular Hypothalamic NucleusRNA, MessengerBase SequenceEmbryonic Stem CellsBlastomeresGastrulaCell AggregationOvumXenopus ProteinsVitellinsMicroscopy, FluorescenceMicroinjectionsTranscription, GeneticChick EmbryoXenopusDNA-Binding ProteinsCell CycleNuclear EnvelopeCaenorhabditis elegansImmunohistochemistryCell DivisionCell Nucleus SizeSuprachiasmatic NucleusRed NucleusNeuronsXenopus laevisTrigeminal NucleiFluorescent Antibody TechniqueMicroscopy, ElectronTime FactorsSubthalamic NucleusChromosomesGreen Fluorescent ProteinsSupraoptic NucleusSignal TransductionMicroscopy, ConfocalMutationCell Nucleus StructuresTeratomaIn Situ HybridizationCarcinoma, EmbryonalEmbryonic and Fetal DevelopmentCaenorhabditis elegans ProteinsCell NucleolusCell LineageGene Expression RegulationZygoteBlastulaHistonesFibroblastsCleavage Stage, OvumInterphaseTeratocarcinomaRecombinant Fusion ProteinsMorphogenesisModels, BiologicalCell Cycle ProteinsChromosome PositioningOctamer Transcription Factor-3EndodermEmbryonal Carcinoma Stem CellsRats, Sprague-DawleyZebrafishDNA ReplicationCDC2 Protein KinaseTransfectionCloning, MolecularProtein Binding