Bacteria in the wound indicates that a person has gangrene, instead of an infarction, in a lower extremity wound.
Bacteria are ubiquitous, mostly free-living organisms, often composed of biological cells. They form a large domain of prokaryotes. Bacteria, which are typically a few micrometers long, were among the first life forms to appear on Earth and are present in most of their habitats.
Bacteria are microscopic single-celled organisms that exist in millions in every environment inside and outside other organisms. Some bacteria are harmful, but most serve a useful purpose. They support many life forms, both plants and animals, and are used in industrial and medical processes.
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