RNA, MessengerGene Expression RegulationReverse Transcriptase Polymerase Chain ReactionProtein BiosynthesisTranscription, GeneticBlotting, NorthernRNA StabilityCells, CulturedIn Situ HybridizationAmino Acid SequenceBase SequenceCloning, Molecular3' Untranslated RegionsCell LineRNA-Binding ProteinsNucleic Acid HybridizationMolecular Sequence DataPoly ADNA, ComplementaryGene Expression Regulation, EnzymologicPolymerase Chain ReactionDNA PrimersRats, Sprague-DawleyLiverPolyribosomesDNABlotting, WesternUp-RegulationPromoter Regions, GeneticRNATranscription FactorsImmunohistochemistryDown-RegulationRNA SplicingTransfectionTumor Cells, CulturedNonsense Mediated mRNA DecayRNA TransportAlternative SplicingTime Factors