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colon bacillus
co·lon bacillus C0486400 (kō′lən)n. A rod-shaped bacterium, especially Escherichia coli, that is normally present and nonpathogenic in the intestinal tracts of vertebrates but can cause diarrhea and other gastrointestinal symptoms.Colon Bacillus
colon bacillus[′kō·lən bə′sil·əs] (microbiology) Escherichia coli Colon Bacillus (Escherichia coli, Bact. coli, Bact. coli commune), a microorganism isolated by the Austrian physician T. Escherich (1885) from human feces. Based on antigenic and biochemical properties, two main species of colon bacillus are distinguished: E. coli and Citrobacter. The colon bacillus is rod-shaped with slightly rounded ends (1–3 × 0.4–0.8 microns in size); it is mobile (it has flagella). It does not form spores and is gram-negative. It is an aerobe or facultative anaerobe. The colon bacillus usually inhabits the human intestine as one of the main constituents of the normal intestinal flora. It is always present in the intestine of most mammals, birds, fish, and insects. Its presence in water or food is indicative of fecal contamination. The method of detecting the colon bacillus is based on its ability to ferment carbohydrates (including glucose and lactose), yielding acid and carbon dioxide. Because it is a favorite object of microbiological and molecular genetic research, the colon bacillus is the organism that has been most fully studied at the molecular level. A genetic map of its chromosome has been compiled, and its patterns of mutation and principal metabolic processes have been studied. KH. KH. PLANEL’ES colon bacillus
bacillus [bah-sil´us] (pl. bacil´li) (L.) 1. an organism of the genus Bacillus.2. any rod-shaped bacterium.anthrax bacillus Bacillus anthracis.Calmette-Guérin bacillus bacille Calmette-Guērin.coliform bacilli gram-negative bacilli found in the intestinal tract that resemble Escherichia coli, particularly in the fermentation of lactose with gas.colon bacillus Escherichia coli.glanders bacillus Pseudomonas mallei.Hansen's bacillus Mycobacterium leprae.legionnaire's bacillus Legionella pneumophila.tubercle bacillus Mycobacterium tuberculosis.typhoid bacillus Salmonella typhi.Esch·e·rich·i·a co·'lia species that occurs normally in the intestines of humans and other vertebrates, is widely distributed in nature, and is a frequent cause of infections of the urogenital tract and of neonatal meningitis and diarrhea in infants; enteropathogenic strains (serovars) of Escherichia coli cause diarrhea due to enterotoxin, the production of which seems to be associated with a transferable episome; the type species of the genus. Synonym(s): colibacillus, colon bacilluscolon bacillus (kō′lən)n. A rod-shaped bacterium, especially Escherichia coli, that is normally present and nonpathogenic in the intestinal tracts of vertebrates but can cause diarrhea and other gastrointestinal symptoms.colon bacillus the bacillus Escherichia coli found in the colon.Escherich, Theodor, German physician, 1857-1911. Escherichia coli - a species that occurs normally in the intestines of humans and is a frequent cause of infections of the urogenital tract and of diarrhea in infants. Synonym(s): colibacillus; colon bacillusEscherich sign - in hypoparathyroidism (latent tetany) tapping the skin at the angle of the mouth causes protrusion of the lips.ThesaurusSeebacillus |