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Title: [The plasmid profile of Salmonella typhimurium strains untypable by phages]. Author: Majtánová L, Burian J, Majtán V. Journal: Cesk Epidemiol Mikrobiol Imunol; 1990 Jul; 39(4):242-9. PubMed ID: 2150611. Abstract: The authors examined 250 strains of Salmonella typhimurium, untypable by phagi, for the sensitivity to antibacterial substances and lysogeny. Testing of the sensitivity to a set of 13 antibacterial substances revealed that 157 strains (63%) were polyresistent. Most frequently they were resistent to ampicillin (96% strains), sulphamethoxydine (71.2%), carbenicillin (68% strains), tetracycline (56% strains), cephalotine (56%), chloramphenicol (53%) and septrin (51% strains). The presence of a prophage was revealed in 99.2% strains. In a narrower selection of 54 strains plasmid DNA was isolated and electrophoretic analysis revealed the presence of 1-5 plasmids. Six strains were plasmid-free. The magnitude of plasmids varied between 2 and 41.4 kb. The authors indicate possibilities of using the plasmid profile in the differentiation of strains.[Abstract] [Full Text] [Related] [New Search]