Limited knowledge is available about the virulence mechanisms responsible for diarrheal disease caused by Salmonella typhimurium. To assess the contribution to diarrheal disease of virulence determinants identified in models of infection, we tested a collection of S. typhimurium mutants for their ability to cause enteritis in calves. S. typhimurium strains carrying mutations in the virulence pl...

BACKGROUND Nontyphoid Salmonella (NTS) infections are a frequent cause of self-limited diarrhoeal illness in healthy children that do not usually require antibiotic treatment. This study was conducted by analyzing the phenotypic and genotypic traits of NTS strains from pediatric patients with acute gastroenteritis living in urban areas in the city of Mérida, Venezuela. METHODOLOGY Thirty-seve...

AIM The aim of this study was (i) To attempt isolation and identification of Salmonella species from samples. (ii) Serotyping of Salmonella isolates. (iii) Detection of virulence factor associated genes by polymerase chain reaction (PCR). MATERIALS AND METHODS A total of 284 samples comprised of chevon and mutton (112 samples each) as well as 60 samples (20 each of retail meat shops environme...

In this paper we compute the conditional and unconditional probability of ruin for an individual who wishes to consume a fixed periodic amount from an initial endowment invested in a portfolio earning a stochastic rate of return. The conditional probability of ruin is the probability that the net wealth becomes zero prior to the individual 's stochastic date of death. Unconditional is the proba...

s of the 214th ACS National Meeting.20. Dong, J., S. Iuchi, H. S. Kwan, Z. Lu, and E. C. Lin. 1993. The deducedamino-acid sequence of the cloned cpxR gene suggests the protein is thecognate regulator for the membrane sensor, CpxA, in a two-component signal transduction system of Escherichia coli. Gene 136:227–230.21. Dziejman, M., and J. J. Mekalanos. 1995. Two-component signal ...