We continue to study the importance of Fusobacterium necrophorum, an obligate anaerobe that causes endemic pharyngitis in adolescents and young adults.

It is caused by tetanospasmin, a toxin released by clostridium tetani.1 Clostridium tetani, is a mobile gram-positive sporeforming obligate anaerobe with soil or dust as its natural habitat.

asaccharolytica is a black-pigmented Gram-negative, obligate anaerobe that belongs to the family Bacteriodaceae.

The gram-negative species, an obligate anaerobe, is a cause of Lemierre's syndrome, wrote Tam Van, Ph.D., and her colleagues in a poster presented at the annual meeting of the American Society for Microbiology.

muciniphilia is an obligate anaerobe, and mucin is its primary source of carbon and nitrogen (Forney, L.

nov., a rapidly growing thermophilic, alkalitolerant, and proteolytic obligate anaerobe. Int.

On the basis of Gram staining and analysis of the organism's morphologic features in culture (growth at 37[degrees]C, obligate anaerobe with spherical, subterminal spores and hemolytic colonies with irregular edges), its biochemical characteristics (the organism was motile, a citrate fermenter), and 16S rRNA gene sequencing, the organism was identified as C.

Bacteroides fragilis is an obligate anaerobe which will appear as a gram negative bacillus on a gram stain.

botulinum is an obligate anaerobe, it remains unclear if a particular concentration of oxygen is capable of preventing toxigenesis.