M protein, hyaluronidase, collagenase, and often a capsule, can be virulence factors for certain pathogenic strains of Streptococcus. Correct answer: letter B.
This is because they allow bacteria to adhere to and penetrate the host's tissues, as well as help evade the host's immune response. While hyaluronidase, collagenase and capsule are components of the bacterial cell wall.
Streptococcus is a genus of bacteria that includes several species commonly found in the human body. These bacteria are spherical or ovoid in shape, and typically grow in chains or pairs. Many species of Streptococcus cause diseases in humans, including:
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