Electron micrograph of<unk> <unk>  is a Gram-positive, rod-shaped, facultatively anaerobic, motile, beta-hemolytic, spore-forming bacterium commonly found in soil, food and marine sponges. The specific name,<unk> , meaning "waxy" in Latin, refers to the appearance of colonies grown on blood agar. Some strains are harmful to humans and cause foodborne illness, while other strains can be beneficial as probiotics for animals. The bacteria is classically contracted from fried rice dishes that have been sitting at room temperature for hours. B.<unk>  bacteria are facultative anaerobes, and like other members of the genus<unk> , can produce protective endospores. Its virulence factors include phospholipase C,<unk> ide, sphingomyelinase, metalloproteases, and cytotoxin K. The<unk>  group comprises seven closely related species: B.<unk>  sensu stricto (referred to herein as B.<unk> , B. anthracis, B. thuringiensis, B. mycoides, B. pseudomycoides, and B. cytotoxicus; or as six species in a<unk>  sensu lato: B. weihenstephanensis, B. mycoides, B. pseudomycoides, B.<unk> , B. thuringiensis, and B. anthracis.
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