a 2-year-old male pekingese dog was referred to shiraz university’s veterinary teaching hospital for anorexia and depression. the case had no history of surgery. physical examination revealed no abnormalities except mild depression and fever. small, coccoid, epicellular bacteria were detected on erythrocytes by microscopic examination of the giemsa-stained blood smears. abnormalities noted in t...

Background: Helicobacter pylori, which is associated with many upper gastrointestinal diseases, is found in half of the population of the world. Several special stains and immunohistochemistry stain for H. pylori are available. The need for and usefulness of immunohistochemical (IHC) technique has been debated for years. Toluidine blue is a simple stain for microbiological studies and is easily...

We report the first feline case of Bartonella henselae endocarditis. Despite negative blood cultures, the cat had high Bartonella antibody titers and B. henselae type I DNA was detected in the damaged aortic valve. Microscopic examination of the valve revealed endocarditis with small silver positive coccoid structures in endothelial cells.

The Bacillus subtilis thermosensitive mutant ts-21 bears two C-G-->T-A transitions in the mnaA gene. At the nonpermissive temperature it is characterized by coccoid cell morphology and reduced cell wall phosphate content. MnaA converts UDP-N-acetylglucosamine into UDP-N-acetylmannosamine, a precursor of the teichoic acid linkage unit.

Among 15 strains of methanogens, one plasmid, pMP1, was identified in the new coccoid isolate PL-12/M. It could not be detected in the cleared lysate, but it was detected in the viscous pellet. The plasmid had a molecular weight of ca. 4.6 x 10(6). A restriction enzyme cleavage map of the cloned plasmid was derived.

A 39-year-old woman with tubarian sterility fell ill with acute pelvic inflammatory disease 2 months after transvaginal oocyte recovery. Laparotomy revealed a large tuboovarian abscess, from which Atopobium vaginae, an anaerobic gram-positive coccoid bacterium of hitherto unknown clinical significance, was isolated. The microbial etiology and the risk of pelvic infections following transvaginal...

Rothia dentocariosa, a gram-positive coccoid- to rod-shaped bacterium with irregular morphology, is a rare cause of bacteremia in patients without endocarditis. We report the first case of R. dentocariosa septicemia without endocarditis, which occurred in a neonatal infant with meconium aspiration syndrome.

The photosymbiosis with host-specific dinoflagellates is a widespread relationship in marine organisms. Despite the evidenced biodiversity of this kind mutualism, most research focuses on study scleractinian corals, and there lack knowledge about other symbiotic cnidarians such as jellyfishes. Mediterranean jellyfish Cotylorhiza tuberculata (Rhizostomae, Scyphozoa) harbors an endosymbiotic dino...

The microbial communities inferred in silica sinter rocks, based on multiscale morphological features (fabrics and textures) the presence of lipid biomarkers their carbon isotopic composition, are evaluated Krýsuvík geothermal area Iceland. Close to vent environments (T > 75 °C pH 1.7‒3), stream floors capped with homogeneous vitreous crusts breccia levels, no distinct recognizable silicifie...