Organisms

Blastocystis hominis

A species of parasitic protozoa found in the intestines of humans and other primates. It was classified as a yeast in 1912. Over the years, questions arose about this designation. In 1967, many physiological and morphological B. hominis characteristics were reported that fit a protozoan classification. Since that time, other papers have corroborated this work and the organism is now recognized as a protozoan parasite of humans causing intestinal disease with potentially disabling symptoms.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

A species of parasitic protozoa found in the intestines of humans and other primates. It was classified as a yeast in 1912. Over the years, questions arose about this designation. In 1967, many physiological and morphological B. hominis characteristics were reported that fit a protozoan classification. Since that time, other papers have corroborated this work and the organism is now recognized as a protozoan parasite of humans causing intestinal disease with potentially disabling symptoms.

MeSH Record

Classification

Broader headings

Related Concepts

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MeSH Record

Synonyms

2 entry terms
  • Blastocystis homini
  • hominis, Blastocystis

MeSH Record

Aspects Covered

17 allowable subheadings

Indexed with the subheadings chemistry, classification, cytology, drug effects, enzymology, genetics, growth & development, immunology, isolation & purification, metabolism, microbiology, parasitology, pathogenicity, physiology, radiation effects, ultrastructure, virology.

MeSH Record

Indexing Annotation

infection: coordinate IM with BLASTOCYSTIS INFECTIONS (IM); coordinate with specific protozoan terms (ANTIGENS, PROTOZOAN, etc) if pertinent

MeSH Record

History Note

92

MeSH Record

Previous Indexing

  • Phycomyces (1971-1979)
  • Protozoa (1986-1991)
  • Zygomycotina (1980-1985)

MeSH Hierarchy

Tree Number

AMA Style

References

  1. National Library of Medicine. Blastocystis hominis. Medical Subject Headings (MeSH). 2026. Unique ID D016845. http://id.nlm.nih.gov/mesh/2026/D016845
  2. Blastocystis hominis. In: Wikipedia. https://en.wikipedia.org/wiki/Blastocystis_hominis
  3. Blastocystis hominis. In: Wikidata. https://www.wikidata.org/wiki/Q19833385