Clostridium botulinum is a relatively large, Gram-positive, spore-forming rod bacterium that grows best in an anaerobic environment at around pH 5 and produces a potent neurotoxin. The endospores ...

Clostridium perfringens is a spore-forming bacteria that can function without oxygen (anaerobic bacteria). These gram-positive bacteria are typically found in human and animal intestines.

Gram staining is one way scientists can identify bacteria. Gram-positive bacteria ... can cause serious bacterial infections. Bacilli are rod-shaped bacteria that typically exist on the skin.