The capsule of Streptococcus pyogenes is made up of
Correct Answer: Hyaluronic acid
Description: Virulence factors of Streptococcus pyogenes: Cell wall associated factors: Capsule Carbohydrate antigen Protein antigen A carbohydrate-based streptococcal capsule composed of hyaluronic acid surrounds the bacterium, protecting it from phagocytosis by neutrophils. It is not antigenic in human beings. The cell wall is composed of an outer layer of protein and lipoteichoic acid, a middle layer of group-specific carbohydrate and an inner layer of peptidoglycan. The peptidoglycan is responsible for cell wall rigidity. It also has some biological propeies such as pyrogenic and thrombolytic activities. Reference: Textbook of Microbiology; Anathanarayan and panicker's;10th edition; Page no: 212
Category:
Microbiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now