Chemicals and Drugs

Immunoglobulin A

Represents 15-20% of the human serum immunoglobulins, mostly as the 4-chain polymer in humans or dimer in other mammals. Secretory IgA (IMMUNOGLOBULIN A, SECRETORY) is the main immunoglobulin in secretions.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

Represents 15-20% of the human serum immunoglobulins, mostly as the 4-chain polymer in humans or dimer in other mammals. Secretory IgA (IMMUNOGLOBULIN A, SECRETORY) is the main immunoglobulin in secretions.

MeSH Record

Classification

Related Concepts

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Drug Class

Pharmacological Action

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See Also

MeSH Record

Synonyms

5 entry terms
  • IgA
  • IgA Antibody
  • Antibody, IgA
  • IgA1
  • IgA2

MeSH Record

Aspects Covered

23 allowable subheadings

Indexed with the subheadings administration & dosage, adverse effects, analysis, biosynthesis, blood, cerebrospinal fluid, chemistry, classification, drug effects, economics, genetics, history, immunology, isolation & purification, metabolism, pharmacology, physiology, poisoning, radiation effects, therapeutic use, toxicity, ultrastructure, urine.

MeSH Record

Indexing Annotation

gammopathy: coordinate IMMUNOGLOBULIN A with PARAPROTEINEMIAS but consider also HYPERGAMMAGLOBULINEMIA, follow text; salivary immunoglobulin A: index IGA, SECRETORY + SALIVA /immunol; immunoglobulin A in tears: index IGA, SECRETORY + TEARS /immunol

MeSH Record

History Note

2002(1971)

MeSH Record

Previous Indexing

  • Immunoglobulins (1970)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Immunoglobulin A. Medical Subject Headings (MeSH). 2026. Unique ID D007070. http://id.nlm.nih.gov/mesh/2026/D007070
  2. Immunoglobulin A. In: Wikipedia. https://en.wikipedia.org/wiki/Immunoglobulin_A
  3. Immunoglobulin A. In: Wikidata. https://www.wikidata.org/wiki/Q79453