Virulence of Salmonella typhimurium: II. Studies of the Polysaccharide Antigens of Virulent and Avirulent Strains.
نویسندگان
چکیده
منابع مشابه
Transduction of virulence within the species Salmonella typhimurium.
Four strains of Salmonella typhimurium avirulent for mice were found to be capable of acting as gene acceptors in transduction experiments. An attempt was made to transduce virulence to three strains, using a typical mouse-virulent strain of S. typhimurium as donor. Two of the strains which are adenine-dependent were successfully made virulent by transduction and simultaneously became adeninein...
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A study has been made of the antigenic relationships between a virulent and an avirulent strain of Salmonella typhimurium. Evidence is presented which supports the hypothesis that the susceptibility of the mouse to infection by S. typhimurium is due to an antigenic relationship between host and parasite. The antigen shared between host and parasite, appears to be absent or is masked in the avir...
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The virulent Salmonella typhimurium strain WB600 carries the mviA allele of the gene mouse virulence A. As shown here, the virulent phenotype of WB600 is the result of a nonfunctional mviA gene. As compared to the functional allele mviA+, mviA increases virulence in Itys mice, but not in Ityr mice. A specific BglII site, mviA4185, between osmZ and galU, located at approximately 35 min on the sa...
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Plasmids play an important role in the virulence and antibiotic resistance of Salmonella. Salmonella carry plasmids having different size and number. Plasmid profile analysis of single isolates of Salmonella typhimurium and Salmonella enteritidis revealed the presence of 4- plasmid profiles. Salmonella serovars produce several Type III secretions including Sop-E and Sop –B. Soap E is detected b...
متن کاملIn Vitro Studies on T H E Interaction between Mouse Peritoneal Macrophages and Strains of Salmonella and Escherichia Coli* by Charles Jenkin,$ Ph.d., and Baruj Benacerraf, M.d
Studies on Salmonella infections in mice showed that the injected bacteria are cleared rapidly from the circulation, and may be found mainly in the liver, and spleen, the principal organs of the reticuloendothelial system (RES) (1). Investigations of the fate of the bacteria in these organs revealed that whereas the population of a virulent strain of Salmonella increases, that of an avirulent s...
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عنوان ژورنال:
- Journal of bacteriology
دوره 40 2 شماره
صفحات -
تاریخ انتشار 1940