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Spore Stain of Bacillus cereus

  • Author: Ralph Van Dyke Jr.
  • Citation: Ralph Van Dyke Jr.. 2009. Spore stain of bacillus cereus.
  • Publication Date : December 2009
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This strain of Bacillus cereus was isolated from a sample of gasoline-contaminated soil and cultured on blood agar during the Summer Microbiology Practicum at the Des Moines University, Iowa. Spores were present after 3 days, however, this picture was taken 1 week after culture. Endospores are extremely hardy bacterial structures that contain the organism genome. Endospores remain viable through many extreme conditions, such as common cooking techniques. Endospores can be destroyed by proper pressure canning or pressure cooking. B. cereus can cause severe food poisoning with a short incubation period. A common source can be fried rice made from unrefrigerated cooked rice. Short incubation B. cereus food poisoning can be mistaken for staphylococcal food poisoning. This picture allows students to see spores utilizing a simple, reliable method of staining.

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