Chemicals and Drugs

Nitrogen

An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.

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Aspects Covered

24 allowable subheadings

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

MeSH Hierarchy

Tree Numbers

  1. D01w.268w.604w
  2. D01w.362w.625w

AMA Style

References

  1. National Library of Medicine. Nitrogen. Medical Subject Headings (MeSH). 2026. Unique ID D009584. http://id.nlm.nih.gov/mesh/2026/D009584
  2. Nitrogen. In: Wikipedia. https://en.wikipedia.org/wiki/Nitrogen
  3. Nitrogen. In: Wikidata. https://www.wikidata.org/wiki/Q627