INTRACELLULAR PATHOGENS
AND CONTACT ANTIGENS THAT INDUCE
DELAYED-TYPE HYPERSENSITIVITY
Intracellular bacteria
  • Mycobacterium
    tuberculosis
  • Mycobacterium leprae
  • Listeria monocytogenes
  • Brucella abortus



Intracellular fungi

  • Penumocystis carinii
  • Candida albicans
  • Histoplasma capsulatum
  • Cryptococcus neoformans



Intracellular parasites

  • Leishmania sp.
Intracellular viruses
  • Herpes simplex virus
  • Variola (smallpox)
  • Measles virus



Contact antigens

  • Poison ivy and oak
  • Picrylchloride
  • Hair dyes
  • Nickel salts