منابع مشابه
Somatic antigens of Streptococcus group E. II. Separation and a partial physicochemical characterization.
Antigenic extracts of Streptococcus group E (SGE) were subjected to fractional ethanol precipitation, block (preparative) electrophoresis, and gel filtration for the purpose of separating the type antigen from the group antigen. Ethanol precipitation was ineffective in separating the substances. Block electrophoresis yielded serologically pure group antigen and a mixture of type and group antig...
متن کاملGroup A Streptococcus produce pilus-like structures containing protective antigens and Lancefield T antigens.
Although pili have long been recognized in Gram-negative pathogens as important virulence factors involved in adhesion and invasion, very little is known about extended surface organelles in Gram-positive pathogens. Here we report that Group A Streptococcus (GAS), a Gram-positive human-specific pathogen that causes pharyngitis, impetigo, invasive disease, necrotizing fasciitis, and autoimmune s...
متن کاملDetermination of somatic and excretory-secretory antigens of Fasciola hepatica and Fasciola gigantica using SDS-PAGE
Human fascioliasis due to unknown species and animal fascioliasis caused by both or one of Fasciola spp. are commonly seen in Iran. To compare electrophoretic patterns of somatic and excretory-secretory antigens of F. hepatica and F. gigantica by sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE), the adult flukes were collected from infected slaughtered bovine livers. E/S a...
متن کاملConyersion of Somatic ‘antigens in Salmonella
The conversion of Salmonella anatultr (group Et, somatic antigens 3, 10) to group I& (antigens 3, 15) by infection with phage cl5 and its virulent mutant P vir has been analyzed. Antigen 15 appears in the cells within a few minutes after infection with either phage. The receptors for another phage, ear, which can be adsorbed only by cells with antigen 15, appear with the new antigen. The recept...
متن کاملStreptococcus pyogenes ( Group A Streptococcus )
Group A streptococcus (GAS) is synonymous with Streptococcus pyogenes, the only species within this group of β-hemolytic streptococci. GAS is one of the leading pathogenic bacteria that infects children and adolescents, and is associated with a wide spectrum of infections and disease states. Worldwide, there are estimated to be >600 million cases of GAS pharyngitis (“strep throat”) and >100 mil...
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ژورنال
عنوان ژورنال: Applied Microbiology
سال: 1970
ISSN: 0003-6919
DOI: 10.1128/aem.19.5.823-829.1970