Streptococcus cell wall resembles: (A) Cardiac valves, (B) Myocardium, (C) Synol fluid, (D) Intima of vessels
Answer is B. Various structural components of Streptococcus pyogenes exhibit antigenic cross-reaction with different tissues of the human body.*Capsular hyaluronic acid- Human synol fluid*Cell wall proteins- Myocardium*Group A carbohydrates- Cardiac Valves*Cytoplasmic membrane antigens- Vascular intima*Peptidoglycans- Skin antigens(Ref: Ananthanarayan 9th edition, p212)