<unk>  is a species of Gram-positive, rod-shaped bacteria within the<unk> .  Known to live commensally on and within humans,<unk>  is an opportunistic pathogen and a cause of<unk> is.  Many physiologically diverse strains of the species are known to exist, though all are strict anaerobes.
Actinomyces israelii
Mycobacterium szulgai
Legionella micdadei
Mycobacterium xenopi
Mycobacterium chelonae
Sporothrix schenckii
Candida glabrata
Mycobacterium malmoense