Streptococcaceae: Streptococcus, Streptococcus Pyogenes, Streptococcus Iniae, Streptococcus Pneumoniae, Lactococcus Lactis

 
9781155403090: Streptococcaceae: Streptococcus, Streptococcus Pyogenes, Streptococcus Iniae, Streptococcus Pneumoniae, Lactococcus Lactis
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 110. Not illustrated. Chapters: Streptococcus, Streptococcus Pyogenes, Streptococcus Iniae, Streptococcus Pneumoniae, Lactococcus Lactis, Group B Streptococcal Infection, Streptococcus Mutans, Streptococcus Bovis, Streptococcus Suis, Streptococcus Agalactiae, Streptococcus Viridans, Streptococcus Salivarius, Streptococcus Thermophilus, Streptococcus Sanguinis, Streptococcus Oralis, Streptococcus Mitis, Streptococcus Anginosus, Streptococcus Equinus, Streptococcus Ratti, Streptococcus Uberis, Streptococcus Sobrinus, Streptococcus Parasanguinis, Streptococcus Cricetus, Streptococcus Dysgalactiae, Streptococcus Canis, Streptococcus Zooepidemicus, Streptococcus Peroris, Streptococcus Intermedius, Streptococcus Constellatus, Streptococcus Vestibularis, Streptococcus Equisimilis, Streptococcus Mitior, Streptococcus Ferus, Streptococcus Milleri Group. Excerpt: Streptococcus pyogenes is a spherical gram-positive bacterium that grows in long chains and is the cause of Group A streptococcal infections. S. pyogenes displays streptococcal group A antigen on its cell wall. S. pyogenes typically produces large zones of beta-hemolysis (the complete disruption of erythrocytes and the release of hemoglobin) when cultured on blood agar plates and are therefore also called Group A (beta-hemolytic) Streptococcus (abbreviated GAS). Streptococci are catalase-negative. In ideal conditions, S. pyogenes has an incubation period of approximately 10 days. It is an infrequent but usually pathogenic part of the skin flora. In 1928, Rebecca Lancefield published a method for serotyping S. pyogenes based on its M protein, a virulence factor that is displayed on its surface. Later in 1946, Lancefield described the serologic classification of S. pyogenes isolates based on their surface T antigen. Four of the 20 T antigens have been revealed to be pili, which are ...

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