Which organ is the primary site of B-lymphocyte maturation in birds?
Correct answer: A. Bursa of Fabricius
- A. Bursa of Fabricius
- B. Thymus
- C. Spleen
- D. Caecal tonsils
Explanation
The bursa of Fabricius is the primary lymphoid organ where B lymphocytes mature in birds. The thymus is mainly associated with T-lymphocyte maturation, while the spleen and caecal tonsils are secondary lymphoid tissues.
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