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Clostridium innocuum : ウィキペディア英語版 | Clostridium innocuum
''Clostridium innocuum'' (CLOIN) is an anaerobic, non-motile, gram-positive bacterium that reproduces by sporulation. While there are over 130 species of Clostridia, ''C. innocuum'' is the third most commonly isolated. Although it is not normally considered an aggressive human pathogen, it has been isolated in some disease processes. ''C. innocuum'' and other Clostrida line the oropharynx and gastrointestinal tract, and are considered normal gut flora. ==Characteristics and identification== Anaerobic gram-positive bacilli affecting human beings are generally divided into two distinct groups, those that form spores (''Clostridium'' spp) and those that do not form spores. Within the spore-forming group of ''Clostridium'' species, some are very pathogenic or toxigenic (''C. perfringens'') while others are rarely pathogenic. Identification and differentiation between anaerobic gram-positive bacteria in a clinical laboratory can be a very difficult task. ''C. innocuum'' forms white, glossy, raised colonies and exhibits a chartreuse fluorescence. It is a small, non-motile rod that does not swarm. ''C. innocuum'' falls into the saccharolytic, non-proteolytic group of clostridia spp. and is negative for gelatin hydrolysis, lecithinase, lipase, indole, urea, and nitrate. It is positive for glucose fermentation, esculin and produces oval, terminal spores.
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