نتایج جستجو برای Bacteria

تعداد نتایج: 122120  

ژورنال: Medical Laboratory Journal 2015
Faezi Ghasemi, Mohammad, Kazemi Darsanaki, Reza, Mohammaddoost Chakoosari, Mohammad, Amini, Abolfazl , Masiha, Alireza ,

Abstract       Background and Objective: Probiotics are living microorganisms that have beneficial effects on the health of digestive system. The aim of this study was to evaluate the antimicrobial ability of acidic and neutral supernatants (culture supernatant) of lactic acid bacteria against common bacterial pathogens.        Meth...

Journal: :The Ulster Medical Journal 1952
S C Rittenberg,

IliE fourtlh editioni of this already well know-n text-book of surgical treatment is hiighly recommIleInded. It wvill b)e greatly appreciated by the senior medical studenit and those post-graduate students wishinig to specialise in sur-gery. Anl effor-t to keep abreast of the ever-widening field of surgery has been miade; eacth chapter lhas been car-efully revisedl and many greatly amplified. U...

2015
Hayk Minasyan,

Erythrocyte is human blood main bactericidal cell. During movement in blood stream erythrocytes are triboelectrically charged by rubbing to each other and vessel walls and this charge automatically attracts and keeps bacteria on erythrocyte surface. Bacteria fixation on erythrocyte membrane activates the receptors of the membrane and stimulates trans membrane releasing of oxygen from oxyhemoglo...

RAZIEH YAZDANPARAST,

Screening of3000 soil samples collected from cities of four different provinces of Iran for starch-hydrolysing bacteria revealed that the nature is enriched with Streptomyces species capable of producing amylolytic enzymes. Among the bacterial isolates, one of the high starch-degrading strains was selected for further microbiological identification and also amylolytic enzyme(s) characteriza...

Magentotactic bacteria are the types of bacteria capable of orientation in an external magnetic field because of the ability to produce structures called magnetosomes. Magnetosomes, nanometer-scale structures, are present in most of the magnetotactice bacteria. They are intracellular organelles composed of magnetic iron mineral crystals individually surrounded by a phospholipid layer. Because o...

2004
W. J. SCHAFER, R. E. ANDERSON, R. A. MORCK, W. E. CASSIDY,

Biochemical confirmation of salmonellae by conventional tube methods usually requires 2 to 3 days of incubation time preceded by preparation of tubed media and transfer of cultures. The principles of heavy inocula and increased substrate concentrations have been used by Sanders et al. (1) to speed up reaction times and thus reduce the time necessary in the laboratory for analysis. To characteri...

2007
Ryan Hayman, Gabriel Wachman,

Advances in genotyping assays have resulted in commercially available, costeffective whole-genome analyses. Once relegated to major genomics centers, genotyping capabilities are now spreading to smaller academic and industrial labs worldwide. With vast numbers of microbial sequences published in online databases, there is increasing interest in not only detecting the presence of pathogens, but ...

Journal: :Annual review of microbiology 2001
H N Schulz, B B Jorgensen,

A small number of prokaryotic species have a unique physiology or ecology related to their development of unusually large size. The biomass of bacteria varies over more than 10 orders of magnitude, from the 0.2 microm wide nanobacteria to the largest cells of the colorless sulfur bacteria, Thiomargarita namibiensis, with a diameter of 750 microm. All bacteria, including those that swim around i...

Journal: :Bacteriological reviews 1939
L W Parr,

The term "coliform" ..................................................... 2 Separation of Friedliander group from other coliform bacteria............. 2 Development of the classification and characterization of coliform bacteria.. 4 The tribe Eschericheae and related forms according to Bergey............ 12 Occurrence and significance of coliform bacteria, including pathology...... 13 Atypical ...

2003
H. H. MARTIN,

An endo-N-acetyl-glucosaminidase which degrades the murein (peptidoglycan) sacculi of the cell walls of Escherichia coli and Spirillum serpens, but not those of Micrococcus lysodeikticus and Sarcina lutea, is present as a contaminant in a "phospholipase C" from Clostridium perfringens. The specificity of enzyme action was elucidated by reduction of liberated glycosidic groups with NaBH4 and ide...

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