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Lactobacillus rhamnosus : ウィキペディア英語版 | Lactobacillus rhamnosus
''Lactobacillus rhamnosus'' is a bacterium that originally was considered to be a subspecies of ''L. casei'', but later genetic research found it to be a species of its own. It is a short Gram-positive facultative anaerobic rod that often appears in chains. Some strains of ''L. rhamnosus'' bacteria are being used as probiotics, and are particularly useful in treating female-related infections, most particularly very difficult to treat cases of Bacterial Vaginosis (or "BV"). The Lactobacillus Rhamnosus and L. Reuteri species are most commonly found in the healthy female genito-urinary tract and are most helpful to supplement in order to regain control over dysbiotic bacterial overgrowth during an active infection. ''L. rhamnosus'' sometimes is used in yogurt and dairy products such as fermented and un-pasteurized milk and semi-hard cheese. While frequently considered a beneficial organism, ''L. rhamnosus'' may not be as beneficial to certain subsets of the population; in rare circumstances, especially those primarily involving weakened immune system or infants, there may be no advantage. ==''Lactobacillus rhamnosus GG'' (ATCC 53103)== ''Lactobacillus rhamnosus'' GG (ATCC 53103) is a strain of ''L. rhamnosus'' that was isolated in 1983 from the intestinal tract of a healthy human being; filed for patent on 17 April 1985, by Sherwood Gorbach and Barry Goldin, and the 'GG' derives from the first letters of their surnames. The patent refers to a strain of "''L. acidophilus'' GG" with American Type Culture Collection (ATCC) Accession No. 53103; later reclassified as a strain of ''L. rhamnosus''. The patent claims the ''L. rhamnosus'' GG (ATCC 53103) strain is acid- and bile-stable, has a great avidity for human intestinal mucosal cells, and produces lactic acid. Since the discovery of the ''L. rhamnosus'' GG (ATCC 53103) strain, it has been studied extensively on its various health benefits and currently ''L. rhamnosus'' GG (ATCC 53103) strain is the world's most studied probiotic bacterium with more than 800 scientific studies. The genome sequence of ''Lactobacillus rhamnosus'' GG (ATCC 53103) has been decoded.
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