Hybrid CellsHeLa CellsHybridization, GeneticCell FusionEnkephalin, Leucine-2-AlanineNeuroblastomaKaryotypingCell LineChromosomes, Human, 16-18Chromosomes, Human, 6-12 and XGliomaEnkephalin, LeucineChromosome MappingChromosomesReceptors, OpioidGenesClone CellsCricetinaeBase SequenceNucleic Acid HybridizationL Cells (Cell Line)Molecular Sequence DataChimeraChromosomes, Human, 4-5Chromosome BandingChromosomes, Human, 13-15Hypoxanthine PhosphoribosyltransferaseChromosomes, Human, 19-20EtorphineFibroblastsHybrid VigorChromosomes, Human, 1-3Lesch-Nyhan SyndromeX ChromosomeHybridomasSpecies SpecificityCloning, MolecularSex ChromosomesKineticsCricetulusNeoplasms, ExperimentalDNAParainfluenza Virus 1, HumanChromosomes, Human, 21-22 and YTumor Cells, CulturedTranscription, GeneticBlotting, SouthernChromosomes, Human, Pair 11Chromosomes, HumanRNA, MessengerRadiation Hybrid MappingTransfectionAmino Acid SequenceCell Transformation, NeoplasticPhenotypeReceptors, Opioid, deltaBucladesineAntigens, SurfaceCell NucleusCrosses, GeneticGlucose-6-Phosphate IsomeraseTeratomaGenetic LinkageGene Expression RegulationGenetic MarkersEnkephalin, MethionineDiploidyMorphinansElectrophoresisFluorescent Antibody TechniqueRNAAdenylate Cyclase ToxinDNA Restriction EnzymesCells, Cultured