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ZoologyNEET 2025Immunity, vaccination, AIDS, cancer

Human Health and Disease

After maturation in primary lymphoid organs, lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s)/tissue(s) like:

A. thymus · B. bone marrow · C. spleen · D. lymph nodes · E. Peyer's patches

Choose the correct answer from the options given below:

  1. A.B, C, D only
  2. B.A, B, C only
  3. C.E, A, B only
  4. D.C, D, E only✓

Solution

Thymus and bone marrow are the primary lymphoid organs where lymphocytes mature. They then migrate to the secondary lymphoid organs — spleen, lymph nodes, tonsils, Peyer's patches and appendix — to meet antigens. Hence C, D and E.

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