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Substantial similarities were observed among the tRFLP patterns of dehI and dehII gene fragments in drinking water samples obtained from three different cities (Minneapolis, MN; St Paul, MN; Bucharest, Romania) and from one biologically active granular activated carbon filter (Hershey, PA). The dominant fragment in the tRFLP profiles of dehI genes from the drinking water samples matched the pattern from an Afipia sp. that was previously isolated from drinking water. In contrast, the dominant fragment in the tRFLP profiles of dehII genes did not match any previously characterized dehII gene fragment. PCR cloning was used to characterize this gene fragment, which had http://www.selleck.cn/products/Verteporfin(Visudyne).html model organism for studying the biodegradation of HAAs in drinking water distribution systems as encoded by dehI genes; the organism that harbours the most prominent dehII gene in drinking water has yet to be cultivated and identified. Significance and Impact of the Study:? The development of a novel application of tRFLP targeting dehI and dehII genes could be broadly useful in understanding HAA-degrading bacteria in numerous environments. ""Aims:? We describe a real-time quantitative multiplex polymerase chain reaction (qmPCR) assay to identify and discriminate between isolates of Campylobacter jejuni and Campylobacter coli. Methods and Results:? Two novel sets http://www.selleckchem.com/products/ch5424802.html of primers and hydrolysis probes were designed to amplify the unique DNA sequences within the hipO, ccoN and cadF genes that are specific to Camp.?jejuni and Camp.?coli. Using the designed optimized qmPCR assay conditions, the amplification efficiency is in range from 108 to 116%. These qmPCR assays are highly specific for Camp.?jejuni and Camp.?coli, as seen through testing of 40 Campylobacter strains and 17 non-Campylobacter strains. In chicken juice and tap water models spiked with known quantities of Camp.?jejuni, qmPCR detected 102�C103?CFU?ml?1 within 4?h. Conclusions:? http://www.selleckchem.com/products/VX-770.html The qmPCR assays developed in this study provide reliable and simultaneous detection and quantification of Camp.?jejuni and Camp.?coli, with good amplification reaction parameters. Significance and Impact of the Study:? Following further validation, the qmPCR assay reported here has the potential to be applied to various sample types as an alternative and rapid methodology. ""Aim:? To isolate and characterize lactic acid bacteria (LAB) and determine whether they could potentially be used as heavy metal (cadmium and lead) absorbing probiotics. Methods and Results:? The study used 53 environmental (mud and sludge) samples to isolate cadmium- and lead-resistant LAB, by following spared plate technique. A total of 255 cadmium- and lead-resistant LAB were isolated from these samples. The survival of 26 of the LAB was found after passing through sequential probiotic characterizations.