Mycobacterium intracellulare

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Mycobacterium intracellulare
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Order: Actinomycetales
Suborder: Corynebacterineae
Family: Mycobacteriaceae
Genus: Mycobacterium
Species: M. intracellulare
Binomial name
Mycobacterium intracellulare
Runyon 1965,[1] ATCC 13950

Mycobacterium intracellulare is a species of the phylum actinobacteria (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycobacterium.


"Gram-positive", nonmotile and acid-fast short to long rods.

Colony characteristics

  • Usually smooth, rarely rough and nonpigmented colonies. Ageing colonies may become yellow.


Differential characteristics


  • Most frequently encountered in pulmonary secretions from patients suffering from tuberculosis-like disease and from surgical specimens from such patients.
  • When isolated from human secretions, it is may be cause of pulmonary disease. It is, however, frequently commensal flora.
  • Biosafety level 2

Type strain[edit]

  • First isolated from fatal systemic disease in a child. Found in soil and water.

Strain ATCC 13950 = CCUG 28005 = CIP 104243 = DSM 43223 = JCM 6384 = NCTC 13025.


  1. ^ Runyon, E. 1965. Pathogenic mycobacteria. Advances in Tuberculosis Research, 14, 235-287.

External links[edit]