Chemicals and Drugs

Agar

A complex sulfated polymer of galactose units, extracted from Gelidium cartilagineum, Gracilaria confervoides, and related red algae. It is used as a gel in the preparation of solid culture media for microorganisms, as a bulk laxative, in making emulsions, and as a supporting medium for immunodiffusion and immunoelectrophoresis.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A complex sulfated polymer of galactose units, extracted from Gelidium cartilagineum, Gracilaria confervoides, and related red algae. It is used as a gel in the preparation of solid culture media for microorganisms, as a bulk laxative, in making emulsions, and as a supporting medium for immunodiffusion and immunoelectrophoresis.

MeSH Record

Classification

Broader headings

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Drug Class

Pharmacological Action

MeSH Record

Aspects Covered

19 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, chemical synthesis, chemistry, classification, economics, history, isolation & purification, metabolism, pharmacokinetics, pharmacology, poisoning, radiation effects, standards, supply & distribution, therapeutic use, toxicity, ultrastructure.

MeSH Hierarchy

Tree Number

  1. D09w.698w.360w.041w

AMA Style

References

  1. National Library of Medicine. Agar. Medical Subject Headings (MeSH). 2026. Unique ID D000362. http://id.nlm.nih.gov/mesh/2026/D000362
  2. Agar. In: Wikipedia. https://en.wikipedia.org/wiki/Agar
  3. Agar. In: Wikidata. https://www.wikidata.org/wiki/Q177998