Tuberculin Test Overview
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Questions and Answers

Which cells are recruited to the skin site in response to the Tuberculin Test?

  • Th2 cells
  • Th1 cells (correct)
  • NK cells
  • B cells

What is the role of small molecules in the context of delayed-type hypersensitivity (DTH)?

  • Directly kill pathogenic microbes
  • Induce antibody production
  • Activate Th2 cells
  • Act as haptens complexing with skin protein (correct)

Which type of pathogens induce delayed-type hypersensitivity (DTH) according to the text?

  • Fungi
  • Intracellular bacteria (correct)
  • Extracellular bacteria
  • Intracellular viruses

What is the primary purpose of injecting purified protein derivative (PPD) in the Tuberculin Test?

<p>Recruit T-cells sensitized by prior infection (A)</p> Signup and view all the answers

Which of the following is NOT an intracellular pathogen that induces delayed-type hypersensitivity?

<p>Pneumocystis carinii (A)</p> Signup and view all the answers

What happens during secondary exposure in delayed-type hypersensitivity (DTH)?

<p>Th1 memory cells become activated (B)</p> Signup and view all the answers

Which of the following is a contact antigen that induces delayed-type hypersensitivity?

<p>Poison ivy (A)</p> Signup and view all the answers

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