The $D.P.T$ vaccine is an example of which type of immunity?

  • A
    Passive immunity
  • B
    Active immunity
  • C
    Both
  • D
    Interferon

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Which of the following occurs in innate immunity?

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Which of the following are phagocytic in nature?

Select the lymphoid organs from the given choices:
$I$. Lymph node $II$. Thymus gland
$III$. Red bone marrow $IV$. Liver
$V$. Spleen $VI$. Osteocytes
$VII$. Peyer's patches
The correct option is:

Lymph nodes are secondary lymphoid organs. Explain the role of lymph nodes in our immune response.

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