Cell MovementMovementGastrulationEmbryo, NonmammalianGastrulaEye MovementsMorphogenesisZebrafishGene Expression Regulation, DevelopmentalEmbryo, MammalianZebrafish ProteinsCell AggregationXenopus ProteinsBody PatterningEmbryonic DevelopmentDictyosteliumCell PolarityChemotaxisSignal TransductionChick EmbryoBlastocystPseudopodiaCell AdhesionModels, BiologicalActinsHead MovementsPrimitive StreakMesodermMovement DisordersXenopus laevisBlastomeresMolecular Sequence DataXenopusEndodermTime-Lapse ImagingCell DifferentiationCytoskeletonCells, CulturedMicroscopy, VideoCell LineageBlastulaCaenorhabditis elegansTime FactorsEctodermPlant Viral Movement ProteinsWnt ProteinsIn Situ HybridizationNotochordCell Surface ExtensionsMutationVitellinsNeural CrestFetal MovementCell LineAmino Acid SequenceCell DivisionEmbryonic Stem CellsBlastodermPsychomotor PerformanceGreen Fluorescent ProteinsAnimals, Genetically ModifiedVideo RecordingCell CommunicationMotion Pictures as TopicCaenorhabditis elegans ProteinsMicroscopy, FluorescenceTranscription FactorsDrosophilaDrosophila ProteinsMicroscopy, Phase-ContrastMitosisEmbryonic InductionBase SequenceMicrofilament ProteinsChimeraSaccadesOvumCell MembraneTeratomaFibroblastsCell ShapeMyxococcus xanthusCarcinoma, EmbryonalArmSomitesElectromyographyPhenotypeBiomechanical PhenomenaOocytesCadherinsRNA, MessengerFetal Proteinsrac GTP-Binding ProteinsTeratocarcinomaStem CellsCleavage Stage, OvumCell NucleusMembrane ProteinsHandMicroscopy, Confocal