Virulence factors of Group-A Streptococcus
Streptococcus are gram positive, catalase negative cocci. Are spherical or ovoid, 0.5-1µ in diameter, arranged in chains, non-motile and non-sporing. They may become gram negative...
Differences between exotoxin and endotoxin
S.N Exotoxin Endotoxin 1. It is released outside the cell. It is present inside the cell membrane and released only when the cell lyse....