Peptide Chain Termination, TranslationalTerminator Regions, GeneticPeptide Termination FactorsTranscription Termination, GeneticCodon, TerminatorRho FactorBase SequenceAbortion, InducedTranscription, GeneticCodon, NonsenseMolecular Sequence DataEscherichia coliAbortion, LegalRNA, MessengerCodonProtein BiosynthesisAbortion, EugenicDNA-Directed RNA PolymerasesMutationAbortion, TherapeuticNucleic Acid ConformationAmino Acid SequenceOperonAbortifacient AgentsRNA Polymerase IIRNA, BacterialAbortifacient Agents, NonsteroidalAbortifacient Agents, SteroidalPregnancyPlasmidsTemplates, GeneticFrameshift MutationRibosomesSaccharomyces cerevisiaeCloning, MolecularEarly Termination of Clinical TrialsRNA StabilityGenesPoly APolyadenylationGenes, RegulatorGenes, BacterialSaccharomyces cerevisiae ProteinsPrenatal DiagnosisSuppression, GeneticDNA ReplicationNonsense Mediated mRNA DecayPregnancy Trimester, FirstRNA, TransferTranscription FactorsRNA HelicasesPeptide Elongation FactorsBacteriophage lambdamRNA Cleavage and Polyadenylation FactorsRNA 3' End ProcessingRNA, ViralTime FactorsDNA Restriction EnzymesRestriction MappingBacterial ProteinsRNARNA Processing, Post-TranscriptionalVacuum CurettageRNA, Transfer, Amino AcylRNA, RibosomalDNA, BacterialExonsKineticsOpen Reading FramesRNA-Binding ProteinsDNAExoribonucleasesGenes, ViralEscherichia coli ProteinsPromoter Regions, GeneticRNA PrecursorsRNA Polymerase IIINucleoside-TriphosphataseViral ProteinsSequence DeletionPoly CRNA, FungalRNA, Small NucleolarRNA Polymerase IDNA, ViralModels, GeneticBinding SitesHeLa Cells3' Flanking RegionMifepristoneGene Expression Regulation, BacterialAbortion ApplicantsFetal DiseasesPregnancy Trimester, SecondNucleic Acid HybridizationAbortion, SpontaneousSequence Homology, Amino AcidGenetic CodeProtein BindingCell Line