Streptococcus pyogenes
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Streptococcus pyogenes is a species of Gram-positive, aerotolerant bacteria in the genus Streptococcus. These bacteria are extracellular, and made up of non-motile and non-sporing cocci that tend to l
Streptococcus Pyogenes
Chains of S. pyogenes bacteria (orange) at 900× magnification
Gram stain of Streptococcus pyogenes
False-color scanning electron microscope image of Streptococcus pyogenes (orange) during phagocytosis with a human neutrophil (blue)
Lancefield grouping
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Lancefield grouping is a system of classification that classifies catalase-negative Gram-positive cocci based on the carbohydrate composition of bacterial antigens found on their cell walls. The syste
Streptococcus pyogenes
…usually pathogenic, part of the skin microbiota that can cause group A streptococcal infection. S. pyogenes is the predominant species harboring the Lancefield group A antigen, and is often called group A Streptococcus (GAS). The name group A (beta-hemolytic) Streptococcus is thus also used. The species name…
Reagents used for Lancefield grouping