Matière vivante, Bactéries

This organism is commonly recovered from soil and water. As normal intestinal flora, it can also usually be found in sewage.

This organism can be isolated from soil, wounds, and intestinal tracts of humans. It digests protein and is known for its strong, distinctive odor.

This organism is a common environmental isolate, and can be found in soil as well as in industrial settings.

Beta hemolysis on blood. Causes wound infections and septicemia. 

Grows on dead tissues. Novobiocin resistant (S. epidermidis and S. aureus novobiocin sensitive). 

Noted for capsular swelling. Causes pneumonia and urinary tract infections.

Isolated from human urinary tract and wound infections, this organism is identifiable by its characteristic putrefactive odor. 

Isolated from milk and udders of cows. Lancefield group B, beta hemolysis. Causes infection of the female genital tract, maternal septicemia, neonatal infections. Camp test positive; resistant to bacitracin.

This spore-forming, thermophilic organism is commonly used for germicidal and sporicidal testing due to its ability to withstand higher-than-normal temperatures.

No Lancefield group shown, alpha hemolysis. Bile solubility test positive, optochin sensitive. Causes pneumonia.