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Our studies were aimed at bacteriological analysis of water in the small municipal lake of Rusałka, in Szczecin. The studies were conducted over four years, in monthly intervals, assuming that the results will enable detailed analysis of bacteriological characteristics of the water in the tested reservoir and will yield sanitary and ecological characteristics of the reservoir. The quantitative estimation...
The paper describes the prevalence of resistant strains within the genetic structure of E. coli (phylogenetic group A, B1, B2 and D). A total of 200 commensal E. coli strains have been derived from 10 species of healthy animals residing on ZOO Safari Park area, in Świerkocin, Poland. The phylogenetic structure of E. coli has been analysed with the use of a PCR-based method. The strains were tested...
The aim of the study was to investigate the effects of sodium fluoride (NaF) and nitrate (NO₃⁻) either administered orally alone or in a combination, on the biochemical parameters of rats. Tests on general toxicity were conducted on the basis of methodical recommendations 408 of the Organisation for Economic Co-operation and Development Guideline for Testing of Chemicals: "Subchronic Oral Toxicity...
The aim of this study was to investigate the accumulation of cadmium (Cd) in the kidneys and its excretion with urine, and possible effect of benzo(a)pyrene (B(a)P) and pyrene on these processes in rats. The studies were conducted on 60 Wistar male rats by short-term (28 d) and subchronic (90 d) experiments. Cadmium was given at doses 0.1 and 0.5 mg/kg. The samples of urine and kidneys were analysed...
The Rep-PCR fingerprinting method has been applied to identify genomic diversity of 252 E. coli strains derived in the area of a flowing-water basin. The received results show that applying UPGMA and Nearest Neighbour-Joining clustering methods to statistical analysis of rep-PCR fingerprints has made it possible to discriminate and group the strains, revealing a characteristic structure of E. coli...
The rep-PCR fingerprinting method, with the support of ERIC and REP primers, was used to analyse the genomic diversity of 93 E. coli strains isolated from lake water samples drawn at two different depths. The applied UPGMA for DNA analysis did not reveale any genomic similarities between the 48 E. coli strains derived from the subsurface-zone water and the 43 of the bottom-zone water. The considerable...
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