types:
genus Heliobacter
a genus of helical or curved or straight aerobic bacteria with rounded ends and multiple flagella; found in the gastric mucosa of primates (including humans)
Rhizobium,
genus Rhizobium
the type genus of Rhizobiaceae; usually occur in the root nodules of legumes; can fix atmospheric oxygen
genus Bacillus
type genus of the Bacillaceae; includes many saprophytes important in decay of organic matter and a number of parasites
genus Clostridium
anaerobic or micro-aerophilic rod-shaped or spindle-shaped saprophytes; nearly cosmopolitan in soil, animal intestines, and dung
genus Nostoc
type genus of the family Nostocaceae: freshwater blue-green algae
Bacteroides,
genus Bacteroides
type genus of Bacteroidaceae; genus of Gram-negative rodlike anaerobic bacteria producing no endospores and no pigment and living in the gut of man and animals
genus Corynebacterium
the type genus of the family Corynebacteriaceae which is widely distributed in nature; the best known are parasites and pathogens of humans and domestic animals
genus Listeria
a genus of aerobic motile bacteria of the family Corynebacteriaceae containing small Gram-positive rods
genus Chlamydia
type genus of the family Chlamydiaceae: disease-causing parasites
Polyangium,
genus Polyangium
type genus of the family Polyangiaceae: myxobacteria with rounded fruiting bodies enclosed in a membrane
genus Treponema
type genus of Treponemataceae: anaerobic spirochetes with an undulating rigid body; parasitic in warm-blooded animals
genus Borrelia
small flexible parasitic spirochetes having three to five wavy spirals
genus Leptospira
very slender aerobic spirochetes; free-living or parasitic in mammals