Gram stain of exudate from a bulla at the site of injection of intravenous drugs (x1000) shows large gram-positive bacilli and the absence of leukocytes. Clostridium perfringens grew anaerobically from this specimen on blood agar. Clostridial infection may produce cellulitis or involve deeper tissues, as in gas gangrene.
Courtesy of Harriet Provine.
Graphic 54494 Version 4.0
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