BACKGROUND Upper gastrointestinal bleeding is a life threatening condition in children. Common sources of upper gastrointestinal bleeding in children include mucosal lesions and variceal hemorrhage. Helicobacter pylori (H. pylori) is a Gram negative spiral-shaped bacterium that is found in the gastric mucous layer or adherent to the epithelial lining of the stomach. It causes more than 90% of d...

Symbiotic, parasitic, and commensal relationships have precise definitions in biology, but often the nature of the relationship between two organisms is not clear-cut and fluctuates over time. This Microbiology Select highlights recent studies that demonstrate how communication between the host and its microbial inhabitants largely determines whether their interaction is beneficial, hurtful, or...

seen in the primary care setting. We believe, however, that our findings would need to be assessed in the primary care setting before implementation is considered. Contributors: See bmj.com Funding: No pharmaceutical company or other commercial entity provided funding or other resources for the study. Competing interests: None declared. Ethical approval: The local ethics committee approved the ...

Introduction: Helicobacter pylori (H. pylori) is suggested to play a role in dyspepsia. The aim of this study was to assess the prevalence of H. pylori, in dyspeptic patients. Methods: This cross-sectional study was conducted on 850 patients with dyspepsia in Iran (2006-2007). The patients were selected using convenience sampling method. Data was collected using ROME III criteria questionnaire...

introduction: helicobacter pylori (h. pylori) is suggested to play a role in dyspepsia. the aim of this study was to assess the prevalence of h. pylori, in dyspeptic patients. methods: this cross-sectional study was conducted on 850 patients with dyspepsia in iran (2006-2007). the patients were selected using convenience sampling method. data was collected using rome iii criteria questionnaire....

This is a study of the pattern known as spiral phyllotaxis-literally, "leaf-arrangement", but applied to the arrangement of seeds, florets, petals, scales, twigs and so on-and which is very widespread in plants. A number of stages in the refinement of model-making are recorded. In particular, the model illustrated in the literature on the subject indicating uniform growth is taken a step furthe...

Cytomegalovirus (CMV) is one of eight herpes virus that can cause disease in humans affecting the 30-100% of the population. In the oral cavity, CMV infection appears as a common ulcerated lesion, without clinical pathognomonic signs. The locations of oral lesions are hard palate, soft palate, tongue and floor of the mouth. This case report describes the case of a 59-year-old woman with a painf...