Hybrid CellsMice, Inbred BALB CHybridization, GeneticCell FusionEnkephalin, Leucine-2-AlanineNeuroblastomaKaryotypingCell LineChromosomes, Human, 16-18Chromosomes, Human, 6-12 and XChromosome MappingGliomaEnkephalin, LeucineChromosomesClone CellsReceptors, OpioidBALB 3T3 CellsGenesCricetinaeNucleic Acid HybridizationChimeraL Cells (Cell Line)Chromosomes, Human, 4-5Species SpecificityChromosome BandingBase SequenceChromosomes, Human, 13-15Chromosomes, Human, 19-20Hypoxanthine PhosphoribosyltransferaseEtorphineMolecular Sequence DataFibroblastsHybridomasHybrid VigorChromosomes, Human, 1-3Neoplasms, ExperimentalX ChromosomeLesch-Nyhan SyndromeSex ChromosomesCricetulusChromosomes, Human, 21-22 and YMice, Inbred StrainsCrosses, GeneticParainfluenza Virus 1, HumanSpleenBlotting, SouthernPhenotypeCloning, MolecularTumor Cells, CulturedChromosomes, Human, Pair 11Antigens, SurfacePlasmacytomaKineticsRadiation Hybrid MappingReceptors, Opioid, deltaDNACell Transformation, NeoplasticBucladesineMice, Inbred C57BLChromosomes, HumanAntibodies, MonoclonalRNA, MessengerGlucose-6-Phosphate IsomeraseTeratomaGenetic MarkersGenetic LinkageAmino Acid SequenceEnkephalin, MethionineDiploidyLeukemia, ExperimentalMorphinansEpitopesAdenylate Cyclase ToxinTranscription, Genetic