Host receptor for streptococcus pyogenes is?: (A) CD4, (B) CD21, (C) CD44, (D) CD46
Answer is D. Ans. (d) CD46(Ref: Wintrobes I2th/pg 2523)CD46 (Complement Membrane Cofactor Protein): It is a receptor to a number of pathogens, such as herpes virus 6, M protein of group A streptococci, Neisseria gonorrhoeae, and Escherichia coli.