Norovirus (NoV) is an etiological agent of acute gastroenteritis in humans. Genomic recombinations NoV occur mainly at the junction genes encoding RNA-dependent RNA polymerase (RdRp) and major capsid protein (viral 1, VP1), which may produce strains with novel combinations VP1- RdRp-genotypes. Here effect on changes proportions VP1-genotypes was examined through analysis observed frequencies Ja...

the persian sturgeon, acipenser persicus (borodin, 1897), is an economically important species, which mainly inhabits the caspian sea. however, little is known about its population genetic structure. in this study, variation in nucleotide sequences of the mitochondrial dna (mtdna) control region of wild stock persian sturgeon was determined to assess the genetic diversity among different natura...

The nucleotide sequences corresponding to bovine crs2and p-casein mRNAs have been determined by cDNA analysis. Both sequences appear to be complete at their 5’ ends. The nucleotide sequence of us2-casein, when compared with the corresponding cavine A sequence, helps to define the boundaries of a large amino acid repeat (-80 residues) whereas comparisons with the nucleotide sequences of rat yand...

Background: Avian reovirus (ARV) has a global distribution in nature and most clinical signs are found in broiler type chickens. Aims: This study was conducted to detect and identify reovirus infections from vaccinated breeder chickens and their progenies. Methods: A total of 20 tissue and blood samples were collected from vaccinated broiler br...