It is not included in secondary lymphoid organ.”

  • A
    Lymph node
  • B
    Spleen
  • C
    Tonsils
  • D
    Thymus

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Match the disease in column $I$ with the appropriate items (pathogen/prevention/ treatment) in column $II$.

Column $-I$ Column $-II$
$(A)$ Amoebiasis $(i)$ Treponemapallidum
$(B)$ Diphtheria $(ii)$ Use only sterilizedfood and water
$(C)$ Cholera $(iii)\;DPT$ Vaccine
$(D)$ Syphilis $(iv)$ Use oral rehydration therapy

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