conclusions it was found that the isolated bacteria produced biosurfactants that had a great potential for different industries. results the 3 isolates from cheese, yoghurt and silage were effective against isolated e.coli and could produce biosurfactants. phylogenic relationships of the 3 potential candidates were determined comparing the 16sr dna gene sequences, they were found to be as 3 iso...

Brucellosis, caused by Brucella spp., is an important zoonotic disease that causes abortion and infertility in cattle and undulant fever in humans. Various studies have examined cell-free native and recombinant proteins as candidate protective antigens in animal models. Among Brucella immunogenes, antigen based on ribosomal preparation has been widely investigated. In this study, the immunogeni...

background: the present study was carried out to detect the infection of larval stages of trichobilharzia species in the snail lymnaea auricularia in northwestern iran based on dna analysis. methods: a total number of 320 snails of l. auricularia were sampled from four water-bodies located in the suburb of urmia city, north west iran, during may to november 2011. the snails were first microscop...

human mitochondrial dna (mtdna) is 16,569 base pairs (bp) in length, coding for 37 genes. during the course of evolution, nearly all the genes expressing ribosomal proteins and ribosomal rnas (rrna) genes have been transferred from the mitochondria to the nucleus. however, mitochondrial dna contains two ribosomal rnas genes (12s and 16s), which have not yet transferred to the nucleus. these two...

tree nuts, including almond (prunus dulcis) are a source of food allergens often associated with life-threatening allergic reactions in susceptible individuals. although the proteins in almonds have been biochemically characterized, relatively little has been reported regarding the identity of the allergens involved in almond sensitivity. the present study was undertaken to identify the allerge...

objectives: the presence of e.coli in fish intended for human consumption may constitute a potential danger, not only in causing disease, but also because of the possible transfer of antibiotic resistance from aquatic bacteria to those infecting humans. the objective of this study was to develop an improved pcr method based on species – specific 16 s rrna gene primers (fes, res) for detection o...

identification  of clinically  significant  nocardia  species  is essential  for the definitive diagnosis, predict antimicrobial susceptibility, epidemiological purposes,  and  for  an  effective  treatment.   conventional   identification   of nocardia species in routine medical laboratories which is based on phenotypic (cellular morphology, colonial characteristics), biochemical and enzymatic...

brucellosis, caused by brucella spp., is an important zoonotic disease that causes abortion and infertility in cattle and undulant fever in humans. various studies have examined cell-free native and recombinant proteins as candidate protective antigens in animal models. among brucella immunogenes, antigen based on ribosomal preparation has been widely investigated. in this study, the immunogeni...

background: the phylogenetic location of chinese spirometra sparganum isolates remains unclear. the aim of this study was to explore the phylogenetic location of the spirometra sparganum isolates from china. methods: the 28s ribosomal dna (rdna) d1 sequences of 14 spirometra sparganum isolates collected from thirteen locations in china were analyzed by using neighbor-joining (nj), maximum parsi...

background: the objectives of our research were to search for leishmania species in rodents in fars province, south of iran, and to compare molecular with conventional methods for detecting these para-sites. methods: rodents were captured using live traps and screened for leishmania species using molecular and conventional methods, including the taking of smears from each ear. nested pcr was em...