Phenotypic consequences of red-white colony type variation in Mycobacterium avium.

doi:10.1099/00221287-147-3-527

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Article

Phenotypic consequences of red-white colony type variation in Mycobacterium avium.

Microbiology (Reading, England) - 1 Mar 2001

Cangelosi Gerard A, Palermo Christine O, Bermudez Luiz E

Abstract excerpt

Mycobacterium avium undergoes reversible morphotypic switching between the virulent transparent colony type and the less virulent opaque colony type. A new morphotypic switch in M. avium, termed red-white, that becomes visible when opaque colonies of clinical isolates are grown on agar media containing Congo red, was recently described. White opaque (WO) variants were found to be more resistant to multiple...

Topics

Anti-Bacterial Agents
Antibiotics, Antitubercular
Clarithromycin
Congo Red
Drug Resistance, Microbial
Humans
Macrophages
Microbial Sensitivity Tests
Mycobacterium avium Complex
Mycobacterium avium-intracellulare Infection
Phenotype
Pigments, Biological
Rifampin
Virulence

Source

Open in PubMed

Identifiers

PMID: 11238960
DOI: 10.1099/00221287-147-3-527

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 30 Aug 2026.

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