Streptococcus - Wikipedia Streptolysin, an exotoxin, is the enzyme produced by the bacteria which causes the complete lysis of red blood cells There are two types of streptolysin: Streptolysin O (SLO) and streptolysin S (SLS)
Streptococcus - Medical Microbiology - NCBI Bookshelf Streptococci are Gram-positive, nonmotile, nonsporeforming, catalase-negative cocci that occur in pairs or chains Older cultures may lose their Gram-positive character Most streptococci are facultative anaerobes, and some are obligate (strict) anaerobes Most require enriched media (blood agar)
Streptococcus | Definition, Species, Disease | Britannica Streptococci are microbiologically characterized as gram-positive and nonmotile Streptococcus contains a variety of species, some of which cause disease in humans and animals, while others are important in the manufacture of certain fermented products
Streptococci, groups A, B, and D. Enterococcus faecalis Streptococci are subdivided into groups by antibodies that recognize surface antigens (figure 4) These groups may include one or more species The most important groupable streptococci are A, B and D
Streptococcal Infections - Infectious Diseases - MSD Manual . . . Streptococci are gram-positive aerobic organisms that cause many disorders, including pharyngitis, pneumonia, wound and skin infections, sepsis, and endocarditis Symptoms vary with the organ infected
Streptococcal Infections: Causes, Symptoms, and Treatment Streptococcus is a genus of bacteria responsible for many human infections Known for its diverse types and the array of diseases it can cause, understanding streptococcus is crucial for effective diagnosis, treatment, and prevention
Streptococcus - Infectious Disease Advisor Streptococci are gram-positive bacteria that make up normal microbial flora of humans and animals 1 In humans, they commonly inhabit the upper respiratory tract, urogenital tract, gastrointestinal tract, and oral cavity 2
Streptococcus: Characteristics, Classification and Clinical Importance Streptococcus is a genus of Gram-positive, spherical bacteria (cocci) that typically arrange themselves in chains of varying lengths, though some may appear in pairs These bacteria are facultative anaerobes, meaning they can survive in both oxygen-rich and oxygen-poor environments
Streptococcus species | Johns Hopkins ABX Guide Group A streptococci: cause complete hemolysis lysis of red cells in blood agar media around under colonies caused by streptolysin (exotoxin), so called β-hemolysis See separate module for details on this organism