Chemicals and Drugs

Ribosomal Spacer DNA

The intergenic DNA segments that are between the ribosomal RNA genes (internal transcribed spacers) and between the tandemly repeated units of rDNA (external transcribed spacers and nontranscribed spacers).

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

The intergenic DNA segments that are between the ribosomal RNA genes (internal transcribed spacers) and between the tandemly repeated units of rDNA (external transcribed spacers and nontranscribed spacers).

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

2 entry terms
  • DNA, Ribosomal Spacer
  • Spacer DNA, Ribosomal

MeSH Record

Aspects Covered

29 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, agonists, analysis, antagonists & inhibitors, biosynthesis, blood, cerebrospinal fluid, chemical synthesis, chemistry, classification, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacokinetics, pharmacology, physiology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure, urine.

MeSH Record

Indexing Annotation

DNA, RIBOSOMAL and DNA, SPACER see DNA, INTERGENIC are also available

MeSH Record

History Note

2001

MeSH Record

Previous Indexing

  • DNA, Ribosomal (1984-2000)
  • RNA, Ribosomal (1984-2000)

MeSH Hierarchy

Tree Numbers

  1. D13.444w.308w.324w.230
  2. D13.444w.308w.475w.230

AMA Style

References

  1. National Library of Medicine. Ribosomal Spacer DNA. Medical Subject Headings (MeSH). 2026. Unique ID D021903. http://id.nlm.nih.gov/mesh/2026/D021903
  2. Ribosomal Spacer DNA. In: Wikidata. https://www.wikidata.org/wiki/Q77197517