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Mycobacterium intermedium

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Kingdom
  
Bacteria

Order
  
Actinomycetales

Family
  
Mycobacteriaceae

Scientific name
  
Mycobacterium intermedium

Phylum
  
Actinobacteria

Suborder
  
Corynebacterineae

Genus
  
Mycobacterium

Rank
  
Species

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Mycobacterium interjectum

Mycobacterium intermedium 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.

Contents

Etymology: Latin; intermedium, meaning between, rapidly and slowly growing mycobacteria.

Description

Gram-positive, and nonmotile acid-fast coccobacilli (2.0 µm x 2.6 µm).

Colony characteristics

  • Eugonic, smooth and photochromogenic colonies (3–5mm in diameter) on Löwenstein-Jensen medium.

    • Physiology

  • Growth on Löwenstein-Jensen medium at 22 °C, 31 °C, 37 °C and 41 °C, (optimal temperature between 31 °C and 37 °C), within 2–3 weeks.
  • Susceptible to ethambutol and rifampin.
  • Resistant to isoniazid and streptomycin.

    • Differential characteristics

  • Phylogenetic position between rapidly and slowly growing mycobacteria.
  • M. asiaticum is phenotypically very similar, but can be distinguished by its growth at 22 °C, and by its dysgonic growth.

    • Pathogenesis

  • Pulmonary disease
  • Biosafety level 2

    • Type strain

  • Repeatedly isolated from sputum from a patient with pulmonary disease.

    • Strain 1669/91 = ATCC 51848 = CCUG 37583 = CIP 104542 = DSM 44049 = JCM 13572

    References

    Mycobacterium intermedium Wikipedia
    (Text) CC BY-SA


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