Clone CellsEmbryo, NonmammalianMolecular Sequence DataEmbryo, MammalianBase SequenceAmino Acid SequenceCloning, MolecularCell LineCell DifferentiationBlastocystGene Expression Regulation, DevelopmentalEmbryonic DevelopmentT-LymphocytesCells, CulturedCell DivisionRNA, MessengerCell AggregationGastrulaDNAVitellinsEmbryonic Stem CellsLymphocyte ActivationBlastomeresXenopus ProteinsDNA, ComplementaryReceptors, Antigen, T-Cell, alpha-betaTransfectionCell LineageChick EmbryoCaenorhabditis elegansMitosisEpitopesReceptors, Antigen, T-CellT-Lymphocytes, Helper-InducerTeratomaPhenotypeXenopusXenopus laevisCarcinoma, EmbryonalMutationOvumPolymerase Chain ReactionTranscription, GeneticCD4-Positive T-LymphocytesTeratocarcinomaCell CycleTranscription FactorsChimeraTumor Cells, CulturedGenes, T-Cell Receptor betaBlastulaOocytesSequence Homology, Amino AcidEmbryonal Carcinoma Stem CellsEndodermGene ExpressionCleavage Stage, OvumStem CellsNucleic Acid HybridizationBlotting, SouthernB-LymphocytesNuclear Transfer TechniquesEpitopes, T-LymphocyteAntibodies, MonoclonalCaenorhabditis elegans ProteinsDNA PrimersGenetic VectorsGene Expression RegulationMice, Inbred C57BLCDC2 Protein KinaseMorphogenesisStarfishSignal TransductionHLA-DR AntigensTime FactorsDNA-Binding ProteinsRetroviridaeIn Situ HybridizationT-Lymphocytes, CytotoxicSea UrchinsZebrafishDipteraRecombinant ProteinsGene Rearrangement, beta-Chain T-Cell Antigen ReceptorQuailCell NucleusCell MovementOctamer Transcription Factor-3MesodermHistocompatibility Antigens Class IIUrochordataEmbryonic and Fetal DevelopmentZygoteReverse Transcriptase Polymerase Chain ReactionInterleukin-2Cell Line, TransformedT-Lymphocyte SubsetsAntigen-Presenting CellsFluorescent Antibody TechniqueMice, Inbred Strains