RNA, GuideRibonuclease PRNA, CatalyticEndoribonucleasesRNA SplicingTetrahymenaBase SequenceNucleic Acid ConformationRNAIntronsRNA, BacterialRNA PrecursorsRNA, MessengerMolecular Sequence DataOligoribonucleotidesRNA, Small InterferingAmikacinRNA, ViralGene Expression Regulation, ViralRNA EditingRNA, RibosomalExonsEscherichia coliDNA-Directed RNA PolymerasesRNA InterferenceRNA VirusesRNA, Double-Stranded