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Discussion

LPS (endotoxin) consist of

  • A.lipid A
  • B.O antigen 
  • C.core polysaccharide
  • D.all of the above

Answer: D

Correct answer: all of the above

Lipopolysaccharide has three parts: lipid A, anchored in the outer membrane and responsible for the endotoxic activity; the core polysaccharide; and the O antigen, the variable chain of repeating sugars that projects outwards and determines the serotype.

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