Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Mycobacterium flavescens
Introduction
Mycobacterium flavescens
Etymology: Latin, flavescens = becoming golden yellow.
Description
Description
Gram-positive, nonmotile and acid-fast rods.
Colony characteristics
- Soft, yellow-orange scotochromogenic, butyrous colonies.
Physiology
- Slow growth on Löwenstein-Jensen medium at 25-37°C, but not at 45°C within 7-10 days.
- Although growth rate is intermediate, metabolic and physiologic properties are more like rapidly growing species.
Differential characteristics
- Serologic specificity demonstrated by immunodiffusion.
- Related to M. fortuitum: can be distinguished by its intense pigment production, and its slow rate of growth.
Type Strain
Type Strain
- Normal human flora, environmental habitat.
- First isolated from a drug treated tuberculous guinea pig (Mexico).
Strain ATCC 14474 = CCUG 29041 = CIP 104533 = DSM 43991 = JCM 12274 = NCTC 10271 = NRRL B-4038.
References
References
- Bojalil et al. 1962. Adansonian classification of mycobacteria. Journal of General Microbiology, 28, 333-346.]
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