Streptococci
Streptococci
oral cavity intestinal tract female genital tract anaerobes
oral cavity intestinal tract female genital tract anaerobes
Rebecca Craighill Lancefield(1895-1981 She is most famous for her serological classification of beta-hemolytic streptococcal bacteria, which is based on the carbohydrate composition of bacterial antigens found on their cell walls Lancefield classification: A serologic classification of hemolytic streptococci, dividing them into groups a to V, 20 groups Most human pathogens are from Group A, eg Streptococcus pyogenes
Rebecca Craighill Lancefield (1895 –1981) She is most famous for her serological classification of beta-hemolytic streptococcal bacteria, which is based on the carbohydrate composition of bacterial antigens found on their cell walls. Lancefield classification: A serologic classification of hemolytic streptococci, dividing them into groups A to V, 20 groups. Most human pathogens are from Group A, eg. Streptococcus pyogenes
° pyogenIc inflammation scarlet fever streptococcal toxic shock syndrome rheumatic heart disease glomerulonephritis
•pyogenic inflammation •scarlet fever •streptococcal toxic shock syndrome •rheumatic heart disease •glomerulonephritis
M protein Complement fibrinogen M protein peptidoglycan It is a component of group A streptococci pili that can inhibits pha gocytosis. M protein binds fibrinogen in plasma which blocks complement to bind to the underlying peptidoglycan layer
M protein r r r peptidoglycan Complement fibrinogen M protein It is a component of group A streptococci pili that can inhibits phagocytosis. M protein binds fibrinogen in plasma which blocks complement to bind to the underlying peptidoglycan layer