Peptide Chain Termination, TranslationalTerminator Regions, GeneticPeptide Termination FactorsTranscription Termination, GeneticCodon, TerminatorRho FactorBase SequenceTranscription, GeneticAbortion, InducedMolecular Sequence DataCodon, NonsenseEscherichia coliAbortion, LegalAmino Acid SequenceMutationRNA, MessengerCodonProtein BiosynthesisDNA-Directed RNA PolymerasesNucleic Acid ConformationAbortion, EugenicAbortion, TherapeuticOperonPlasmidsAbortifacient AgentsRNA, BacterialPregnancyRNA Polymerase IIAbortifacient Agents, NonsteroidalCloning, MolecularAbortifacient Agents, SteroidalSaccharomyces cerevisiaeTemplates, GeneticFrameshift MutationRibosomesGenesGenes, BacterialKineticsTime FactorsSaccharomyces cerevisiae ProteinsDNA ReplicationRNA StabilityPoly AGenes, RegulatorEarly Termination of Clinical TrialsPolyadenylationSuppression, GeneticTranscription FactorsBacterial ProteinsRestriction MappingPrenatal DiagnosisBinding SitesRNA, TransferDNA Restriction EnzymesRNA, ViralBacteriophage lambdaDNANonsense Mediated mRNA DecayPregnancy Trimester, FirstRNAPeptide Elongation FactorsRNA HelicasesDNA, BacterialmRNA Cleavage and Polyadenylation FactorsExonsRNA 3' End ProcessingRNA Processing, Post-TranscriptionalRNA, RibosomalPromoter Regions, GeneticEscherichia coli ProteinsNear DrowningGenes, ViralRNA, Transfer, Amino AcylVacuum CurettageProtein BindingRNA-Binding ProteinsSequence Homology, Amino AcidOpen Reading FramesSequence DeletionRNA PrecursorsChromosome MappingModels, BiologicalExoribonucleasesViral ProteinsCell LineModels, GeneticDNA, ViralRNA Polymerase IIIModels, MolecularHeLa CellsNucleic Acid HybridizationRNA, FungalNucleoside-TriphosphataseGene Expression Regulation, BacterialPoly CSequence Homology, Nucleic Acid3' Flanking RegionPolymerase Chain ReactionDNA-Binding ProteinsSequence Analysis, DNA