One organism in this genus secretes C5a peptidase, and one subgroup is distinguished by bacitracin sensitivity.
An autoimmune reaction to one organism of this genus causes Sydenham's chorea. One organism in this genus secretes C5a peptidase, and one subgroup is distinguished by bacitracin sensitivity. An ASO titer is used to diagnose a sequela of infection by one member of this genus, which causes glomerulonephritis. They are able to inhibit C3 convertase and protect against phagocytosis using the M protein. The Lancefield antigens were used to sort (*) members of this genus, which are also grouped by their ability to lyse blood agar. Species include viridans, which infest artificial heart valves, and mutans, which causes dental caries. Members of this genus are round, gram-positive, and grow in clusters. Another member of this genus causes scarlet fever. For 10 points, name this genus of bacteria, whose most famous member causes sore throats.
An autoimmune reaction to one organism of this genus causes Sydenham's chorea.
streptococcus [accept more specific answers]