Moderate

Most antibodies are produced in the________________?

Correct answer: D. Spleen and the lymph nodes

  • A. Heart and the liver
  • B. Brain and the meninges
  • C. Thymus and the appendix
  • D. Spleen and the lymph nodes

Explanation

Antibody-producing B cells and plasma cells are concentrated in secondary lymphoid organs, especially the spleen and lymph nodes. The thymus is mainly involved in T-cell maturation, not bulk antibody production.

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