Mycobacterium massiliense

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Mycobacterium massiliense
Scientific classification
Kingdom: Bacteria
Phylum: Actinobacteria
Order: Actinomycetales
Suborder: Corynebacterineae
Family: Mycobacteriaceae
Genus: Mycobacterium
Species: M. massiliense
Binomial name
Mycobacterium massiliense
Adékambi et al. 2006, CCUG 48898

Mycobacterium massiliense is a rapidly growing Mycobacteria species sharing an identical 16S rRNA sequence with Mycobacterium abscessus. Etymology: massiliense, pertaining to Massilia, the Latin name of Marseille, France where the organism was isolated.


Strictly aerobic, nonmotile, non-spore forming, acid-fast, Gram-positive rods.

Colony characteristics

  • The colonies are nonphotochromogenic and intermediate between smooth and rough, although it is possible to identify isolates with rough phenotype;


  • Growth occurs between 2 and 4 days on 5% sheep blood agar, Middlebrook 7H10 agar, and LJ slants at between at 24 and 37 °C; no growth is observed at 42 and 45 °C.

Differential Characteristics

  • Differentiated from Mycobacterium abscessus by hsp65 sequence (5bp difference)


Type strain[edit]

Strain CCUG 48898 = CIP 108297.