نتایج جستجو برای: virulence isolates respectively from populations of rasht
تعداد نتایج: 21644263 فیلتر نتایج به سال:
this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...
Avian pathogenic Escherichia coli (APEC) causes colibacillosis in poultry, a leading cause of poultry mortality worldwide. It is crucial to control APEC broiler breeders as it vertically transferred progeny via eggs. However, there only limited knowledge on the current population breeders. This study characterized 28 strains isolated from with colibacillosis. The genotypic-virulence characteris...
background: the aim of this study was to determine the prevalence of virulence-associated genes and enterobacterial repetitive intergenic consensus pcr (eric-pcr) analysis of campylobacter spp. isolated from children with diarrhea in iran. methods: a total of 200 stool specimens were obtained from children under 5 years during july 2012 to july 2013. detection of c. jejuni and c. coli was perfo...
conclusions these results indicate that the pcr method is a powerful genotypic assay for the detection of adhesin-encoding operons. thus, this assay can be recommended for clinical use to detect virulent urinary e. coli strains, as well as epidemiological studies. materials and methods a total of 100 upec isolates were obtained from urine samples of patients with uti. the prevalence of 5 virule...
BACKGROUND: Salmonella Enteritidis (SE) infection in poultry is one of the most important concerns in poultry. Virulence and pathogenicity of the SE isolates from Iran have not been well studied so far. OBJECTIVES: In the present study, three Salmonella Enteritidis (SE) isolates were compared with a standard SE strain (PT21) for virulenc...
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
Background: Lactococcus garvieae causes lactococcosis in rainbow trout in many parts of the world. Aims: This study was conducted for the existence of the virulent factors and differentiation of the two serotypes in L. garvieae. Methods: Twenty-two strains of L. garvieae isolated from diseased rainbow trout from farms...
Capsules from a range of pathogenic bacteria are the key determinants of virulency. The capsule hasbeen implicated in virulence of Pasteurella multocida. In this study a type-specific polymerase chain reaction(PCR) assay was used for capsular typing of 39 avian P. multocida isolates from Iran. The PCR amplified afragment of 1044 bp from all of tested isolates. It was found that all avian P. mul...
Introduction: There are various virulence factors encoded by Staphylococcus Aureus, which enable them to cause nosocomial infections and mastitis in dairy cattle. The clf-A gene mediates the bacterial colonization through binding to the extracellular matrix of the host. Treatment of such infections becomes more difficult due to increased resistance to methicillin. The current study aimed at inv...
Partial gene sequences of phenylalanyl-tRNA synthase alpha subunit (pheS) and RNA polymerase alpha subunit (rpoA) were evaluated for species delineation and detection of recombination among enterococci populations recovered from a bathing beach impacted by low tide river flow. At inter-species level, a maximum similarity of 86.5% and 94.8% was observed among the enterococci pheS and rpoA sequen...
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