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  • RNAs
  • A large group of snRNAs are known as small nucleolar RNAs (snoRNAs). (wikipedia.org)
  • These are small RNA molecules that play an essential role in RNA biogenesis and guide chemical modifications of ribosomal RNAs (rRNAs) and other RNA genes (tRNA and snRNAs). (wikipedia.org)
  • They are located in the nucleolus and the Cajal bodies of eukaryotic cells (the major sites of RNA synthesis), where they are called scaRNAs (small Cajal body-specific RNAs). (wikipedia.org)