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rue about capsules and slime layers?

  • July 4, 2018

Which of the following is not true about capsules and slime layers? A) They consist of secreted material lying outside of the bacterial cell wall. B) They can prevent desiccation…

The major virulence factor of Group A streptococci.

  • July 4, 2018

All of the following statements about the M-protein of Group A Streptococci are correct EXCEPT: A. The amino terminal portion (distal portion) is variable accounting for over 80 distinct serotypes.…

Non-suppurative complications are of concern?

  • July 4, 2018

A 12 year old boy presents with acute onset of sore throat fever to 38.9 degrees C and painful anterior cervical lymphadenopathy. On exam the pharynx is red and swollen…

A protein-conjugated polysaccharide vaccine.

  • July 4, 2018

Which of the following statements about the 23-valent pneumococcal vaccine is not correct? A. It is a protein-conjugated polysaccharide vaccine. B. It is poorly immunogenic in young children and immunocompromised…

What is the O antigen of Enterobacteriaceae?

  • July 4, 2018

What is the O antigen of Enterobacteriaceae? A. Cell surface polysaccharide B. A channel controlling substance taken into the organism. C. A flagellar protein D. A peptidoglycan matrix important for…