Results 281 to 290 of about 171,270 (316)
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Plasmid DNA of virulent Alcaligenes faecalis
American Journal of Veterinary Research, 1986SUMMARY Alcaligenes faecalis strains originating from chickens and from epizootics of coryza in turkeys were screened for antibiotic susceptibility and for the presence of plasmid DNA. Seven of 35 strains contained plasmid DNA ranging in size from 10.5 to approximately 32 megadaltons.
G H, Luginbuhl +4 more
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1994
Abstract The term plasmid was originally used by Lederberg (1) to describe all extra chromosomal hereditary determinants. Currently, the term is restricted to autonomously replicating extrachromosomal DNA. Their sizes range from 1 kb to more than 200 kb (2), and even larger plasmids were detected in Rhizobium (3). Although they replicate
Marcelo E Tolmasky +2 more
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Abstract The term plasmid was originally used by Lederberg (1) to describe all extra chromosomal hereditary determinants. Currently, the term is restricted to autonomously replicating extrachromosomal DNA. Their sizes range from 1 kb to more than 200 kb (2), and even larger plasmids were detected in Rhizobium (3). Although they replicate
Marcelo E Tolmasky +2 more
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Research in Microbiology, 1995
Six wild-type (wt) strains of Salmonella typhimurium, one wt strain of S. heidelberg and 12 wt strains of Escherichia coli were isolated based on both hybridization to a 6-kb HindIII fragment of the non-virulence coding part of the S. dublin serovar-specific virulence plasmid and the absence of hybridization to the virulence genes (spv genes) of the ...
Aabo, S. +3 more
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Six wild-type (wt) strains of Salmonella typhimurium, one wt strain of S. heidelberg and 12 wt strains of Escherichia coli were isolated based on both hybridization to a 6-kb HindIII fragment of the non-virulence coding part of the S. dublin serovar-specific virulence plasmid and the absence of hybridization to the virulence genes (spv genes) of the ...
Aabo, S. +3 more
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The Large Virulence Plasmid of Shigella
1992Invasion of human colonic epithelial cells constitutes one of the earliest steps in the pathogenesis of dysentery caused by Shigella species and enteroinvasive strains of Escherichia coli (EIEC). Following the invasion of target cells by virulent bacteria, their subsequent multiplication, intracellular movement, and intercellular spread result in a ...
C, Sasakawa, J M, Buysse, H, Watanabe
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Plasmid DNA in virulent and avirulent gonococci
Canadian Journal of Microbiology, 1975The presence of covalently closed circular (CCC) DNA in virulent and avirulent colonial types of Neisseria gonorrhoeae strain 2686, and of type 3 colonies of strain F62 was investigated. CCC DNA was present in each, and the percentage of plasmid relative to total DNA was similar.
T S, Walker, R A, Haak, W S, Wegener
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The Salmonella Typhimurium Virulence Plasmid
1991Salmonellosis is a good example of an infectious disease in which intracellular growth is an essential step; Salmonellae undergo a major multiplication step within host tissue macrophages. Many different serovars of Salmonella cause extraintestinal infections in man and mouse, yet the course of the infection is similar, if not identical.
Mikael Rhen +4 more
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Plasmid-Mediated Virulence in Shigella Species
Journal of Infectious Diseases, 1982ESCOLA PAULISTA MED,RUA BOTUCATU 8623 ANDAR,BR-04023 SAO PAULO,SP,BRAZIL ; ESCOLA PAULISTA MED,RUA BOTUCATU 8623 ANDAR,BR-04023 SAO PAULO,SP,BRAZIL ; Web of ...
Silva, R. M. +2 more
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Plasmid Encoded Virulence of Yersinia
1991The three virulent members of the genus Yersinia harbour related virulence Plasmids with a molecular weight of about 60-70 kb (11). When exponential phase cultures of these organisms growing in a Ca2+ free medium are shifted from 26C to 37C, growth ceases over a period of about 2 generations (10).
H. Wolf-Watz +8 more
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Molecular analysis of spv virulence genes of the salmonella virulence plasmids
Molecular Microbiology, 1993SummaryGenes on an 8 kb region common to the virulence plasmids of several serovars of Salmonella are sufficient to replace the entire plasmid in enabling systemic infection in animal models. This virulence region encompasses five genes which previously have been designated with different names from each investigating laboratory.
P A, Gulig +5 more
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Plasmid-induced loss of virulence in Vibrio cholerae
Nature, 1978WE have previously reported that pathogenicity of Vibrio cholerae was suppressed by introducing P or V plasmids and that this effect was due to decreased toxin production1. This work has been extended to show that cells harbouring both P and V plasmids become attenuated and do not cause experimental cholera.
V B, Sinha, B S, Srivastava
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