tailieunhanh - báo cáo hóa học:" New Vibrio cholerae O1 Biotype ElTor bacteriophages"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học đề tài : New Vibrio cholerae O1 Biotype ElTor bacteriophages | Virology Journal BioMed Central Research New Vibrio cholerae O1 Biotype ElTor bacteriophages Anindito Sen1 2 and Amar N Ghosh 1 Open Access Address 1Division of Electron Microscopy National Institute of Cholera and Enteric Diseases P-33 . Road Scheme- XM Beleghata Kolkata-700010. India and 2 Present Address Laboratory of Structural Biology Room 1504 Building 50 NIAMS NIH Bethesda MD 20852 USA Email Anindito Sen - sena@ AmarN Ghosh - anghosh@ Corresponding author Published II April 2005 Received 17 February 2005 Accepted 1 1 April 2005 Virology Journal 2005 2 28 doi 1743-422X-2-28 This article is available from http content 2 1 28 2005 Sen and Ghosh licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License http licenses by which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Abstract We report the presence of three new O1 ElTor vibriophages named AS 1 AS2 and AS3 isolated from the sewage and pond waters of the outskirts of Kolkata. A few phages named AS4 with hexagonal heads and abnormally long tails with typical curly projections were also found in the water samples. Vibrio cholerae the causative agent of cholera in humans is classified into two serotypes O1 and nonO1 1 . The O1 strains are divided into two biotypes Classical and ElTor. Before 1961 most epidemics had been caused by the classical biotype. But with the passage of time the classical biotype disappeared from the scenario and the ElTor emerged as the major biotype causing the Vibrio cholerae in humans. In 1993 Vibrio cholerae serogroup O139 made an explosive appearance and caused a severe epidemic in the Indian continent 2 . The disease cholera spreads rapidly to far off places from the epicenter of its emergence. From the epidemiological point of view it is important to track down the .

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