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a genus of gram-negative, facultatively anaerobic, nonmotile, rod-shaped bacteria containing four species that are differentiated by biochemical reactions: S. dysente´riae (subgroup A), S. flex´�neri (subgroup B), S. boy´dii (subgroup C), and S. son´nei (subgroup D). Their normal habitat is the intestinal tract of humans and higher monkeys; all species cause dysentery.
any individual organism of the genus Shigella.
A genus of nonmotile, aerobic to facultatively anaerobic bacteria (family Enterobacteriaceae) containing gram-negative nonencapsulated rods. These organisms cannot use citrate as a sole source of carbon; their growth is inhibited by potassium cyanide and their metabolism is fermentative; they ferment glucose and other carbohydrates with the production of acid but not gas; lactose is ordinarily not fermented, although it is sometimes slowly attacked; the normal habitat is the intestinal tract of humans and of higher apes; all of the species produce dysentery. The type species is Shigella dysenteriae.
Shigella/Shi·gel·la/ (shĭ-gel´ah) a genus of gram-negative bacteria (family Enterobacteriaceae) which cause dysentery. They are separated into four species on the basis of biochemical reactions: S. dysente´riae, S. flexne´ri, S. boy´dii, and S. son´nei.
shigella/shi·gel·la/ (shĭ-gel´ah) pl. shigel´lae an individual organism of the genus Shigella.
n. pl. shi·gellae (-gĕl′ē) also shi·gellas
Any of various nonmotile, rod-shaped bacteria of the genus Shigella, which includes some species that cause dysentery.
Etymology: Kiyoshi Shiga, Japanese bacteriologist, 1870-1957
ShigellaMicrobiology A genus of gram-negative bacilli of the family Enterobacteriaceae, and major cause of bacterial dysentery
A genus of nonmotile, aerobic to facultatively anaerobic bacteria containing gram-negative, non-spore-forming rods. A major cause of dysentery.
Shiga,Kiyoshi, Japanese bacteriologist, 1870-1957.
Shigella boydii - a species found in feces of symptomatic individuals.
Shigella dysenteriae - a species causing dysentery in humans and in monkeys. Synonym(s): Shiga bacillus; Shiga-Kruse bacillus
Shigella flexneri - a species found in the feces of symptomatic individuals and of convalescents or carriers; the most common cause of dysentery epidemics and sometimes of infantile gastroenteritis. Synonym(s): Flexner bacillus; paradysentery bacillus
Shigella sonnei - a species causing mild dysentery and also summer diarrhea in children. Synonym(s): Sonne bacillus
Shigella - a genus of nonmotile, aerobic to facultatively anaerobic bacteria (family Enterobacteriaceae), all of whose species produce dysentery.
Shiga bacillus - Synonym(s): Shigella dysenteriae
Shiga-Kruse bacillus - Synonym(s): Shigella dysenteriae
shigellosis - bacillary dysentery caused by bacteria of the genus Shigella.
Genus of nonmotile, aerobic to facultatively anaerobic bacteria with habitat in the intestinal tract of humans and of higher apes; all species produce dysentery.
a genus of gram-negative rods in the family Enterobacteriaceae. There are four subgroups or species. The type species, S. dysenteriae, causes bacillary dysentery in humans and nonhuman primates. Other animals are resistant to infection, but organisms have been isolated from dogs without clinical signs.
pl. shigellae. See Escherichia coli Shigella.