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Cord factor is a ___________

  • A.protein
  • B.teichoic acid derivative
  • C.mycolic acid derivative
  • D.carbohydrate

Answer: C

Correct answer: mycolic acid derivative

Cord factor is trehalose dimycolate - a sugar esterified with two mycolic acids, the long-chain fatty acids peculiar to the mycobacterial wall. It makes M. tuberculosis grow in the serpentine cords that give it its name, and it contributes to virulence by damaging mitochondria and inhibiting the migration of leucocytes.

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