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The present study investigates the occurrence of R-plasmid in Salmonella typhi isolates from enteric fever cases in and around Kolkata (1991-2001), India following in vitro conjugation experiments, is...
The presence of large plasmids in 30 Rhodococcus equi strains isolated from pig lymph nodes with granulomatous changes was investigated. Plasmid DNAs were isolated and digested with the restriction en...
The prevalence of qnr and qepA genes in 660 Escherichia coli isolates was investigated in healthy animals from 30 pig farms and 30 chicken farms in Taiwan from January 2005 to February 2006 by the pol...
A study was conducted to determine the prevalence, antibiotics resistant and plasmid patterns of Salmonella enteritidis on chicken meat samples. A total of 578 chicken meat samples were examined over ...
A study was conducted to determine the prevalence, antibiotics resistant and plasmid patterns of Salmonella enteritidis on chicken meat samples. A total of 578 chicken meat samples were examined over ...
The genetic diversity of symbiotic plasmids (pSyms)and symbiotic effectiveness was investi— gated in 1 1 isolates from one field population of Rhizobium fredii that had previously been charac— teriz...
Lactococcus lactis subsp. lactis biovar. diacetylactis DRC1 carries more than 6 plasmids, including a 7.4 kb cryptic plasmid, which was designated as pDR1-1. The pDR1-1 plasmid was found to significan...
The aim of this study was to investigate the antibody response following immunization with plasmid vector DNA containing the hepatitis B virus core antigen (HBcAg) gene of a hepatitis B virus (HBV) is...
Aim: The aim of this study was to investigate the carriage of b-lactamase genes in ampicillin-resistant (Ampr) Escherichia coli (E. coli) isolates from human normal fecal flora. Methods: Ten Ampr E. c...
Electroduction is a method which allows direct transfer of plasmid DNA between donor and recipient under conditions of electroporation. The application of this technique allows significantly faster an...
Palindromic sequences act as potential initiators of mitotic and meiotic recombination in yeast. We investigated the influence of a 102 base pair (bp) palindromic insertion present on a non-replicativ...
Different procedures used for targeted genetic manipulations are based on homologous recombination between chromosomal and exogenous DNA. A double-strand break (DSB) present on the plasmid molecule st...
A total of 65 identified isolates of coliform bacteria Salmonella, including Campylobacter and Staphylococcus isolated from different control points of a poultry slaughterhouse in Ankara, Turkey were ...
A total of 116 isolates were identified from randomly collected market dahi samples from Rawalpindi, Pakistan. Lactic acid bacteria dominated the microbial population of dahi and were identified accor...
以携带pUB110质粒的枯草芽孢杆菌BR151菌株为出发菌株,利用亚硝基胍作诱变剂,直接在LB平板上进行诱变。从2949个菌落中筛选出一个转化频率低于出发菌株2~3个数量级的突变株,并对其营养缺陷型、UV的敏感性及Km抗性和质粒进行了检测,确证其转化能力降低为自然感受态缺陷而非营养缺陷型的改变或重组缺陷所致。

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