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Pseudomonas spp., are Gram-negative rods belonging to the Pseudomonadaceae family. These bacteria often change their phenotypic characteristics, are very adaptable and also resistant to most of the utilized antibiotics and disinfectants. The major representative of these bacteria is Pseudomonas aeruginosa (blue pus rod), which is primarily considered as a dangerous pathogen not only to humans but...
The incapacity for lactose fermentation by Yersinia pseudotuberculosis strains is a very important diagnostic characteristic. There are only two (lacZ and lacY) genes from three known structural genes of lactose fermentation pathway present in Y. pseudotuberculosis genome. The result of the expression of gene lacZ is β-galactosidase (positive result of ONPG test). The fragment of 895229 bp includes...
The aim of this study was to prove that PCR is a very useful method to identify Salmonella strains and to determine their virulence factors by amplification of characteristic genetic markers. Investigations included 5 strains of Salmonella which were obtained from pure cultures and 1 Salmonella strain from the mixed culture. Genotypie analysis of 6 examined strains revealed the 163-bp fragment of...
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