background: blood group antigen binding adhesin ( baba2 ) , is essential for attachment of helicobacter pylori (h. pylori) to the epithelial cell layer and is the most important adhesin of h. pylori . the prevalence rate of the baba2 gene varies in different geographic areas. the aim of this study is to determine the frequency of the baba2 gene in patients with different clinical outcomes. mate...

background: to differentiate sarcocystis macro-cyst-forming species in slaughtered sheep in babol area, mazandaran province, sequence analysis of 18s rrna gene was performed. methods: overall, 150 slaughtered sheep were examined macroscopically in slaughterhouse, babol and intra-abdominal and diaphragm muscles tissues infected with macro-cyst of sarcocystis spp. were collected in 2013. one macr...

The relatively recent origin of sex chromosomes in the plant genus Silene provides an opportunity to study the early stages of sex chromosome evolution and, potentially, to test between the different population genetic processes likely to operate in nonrecombining chromosomes such as Y chromosomes. We previously reported much lower nucleotide polymorphism in a Y-linked gene (SlY1) of the plant ...