although the conventional therapies have obviously improved the conditions of patients with cancer, some mechanisms of resistance have led scientists to use alternative agents that can penetrate in most solid tumors. furthermore, the success of cancer therapies depends on limiting the uptake of toxins to normal tissues and their selectivity to malignant cells. the involvement of natural and gen...

        Freshwater crayfish (Astacus leptodactylus) is an important economic fisheries resource of Aras reservoir, Iran. The infection of freshwater crayfish by gram negative and gram positive bacteria are common in natural and cultural environments. These bacteria are considered as secondary disease agents or opportunities. This study was conducted to investigate infes...

Background and Objective: Hospitals niche as a source and repository for microbial infections are playing a significant role in the health of hospitalized patients. Bacteria are playing an essential role in human and animal blood infections and meningitis. The prevalence of bacterial agents and their susceptibility patterns are fundamental goals of current research. Materials and Methods: Samp...

conclusions it can be concluded that a. otitidis was the major causative agent of mee in children with ome. therefore clinicians should be aware that bacterial infection plays an important role in the progression of acute otitis media to ome in children of our region. results the bacterial cultures in 8.6% of samples were positive by conventional culture, with a. otitidis, m. catarrhalis and s....