It is not included in secondary lymphoid organ.”

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

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  • [AIPMT 1990]

Which group of three of the following five statements $(I-V)$ contains is correct regarding beriberi?

$I.$ A crippling disease prevalent among the native population of sub-Sahara Africa.

$II.$ A deficiency disease caused by lack of thiamine (vitamin- $B_{1}$ ).

$III.$ A nutritional disorder in infants and young children when the diet is persistantly deficient in essential protein.

$IV.$ Occurs in those countries where the staple diet is polished rice.

$V.$ The symptoms are pain from neuritis, paralysis, muscle wasting, progressive oedema, mental deterioration and finally heart failure.