Bursa of Fabricius
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In birds, the bursa of Fabricius is the site of hematopoiesis. It is a specialized organ that, as first demonstrated by Bruce Glick and later by Max Dale Cooper and Robert Good, is necessary for B cel
3 bursa of Fabricius opened : left : chronic inflamation; middle : acute inflamation; right : normal
Lymphatic system
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The lymphatic system, or lymphoid system, is an organ system in vertebrates that is part of the immune system and complementary to the circulatory system. It consists of a large network of lymphatic v
Bursa of Fabricius
…development. The bursa is present in the cloaca of birds and is named after Hieronymus Fabricius, who described it in 1621. The bursa is an epithelial and lymphoid organ that is found only in birds. The bursa develops as a dorsal diverticulum of the proctodeal region of the cloaca. The luminal (interior) surface…
Anatomy of the lymphatic system showing primary and secondary lymphoid organs
Reed–Sternberg cells
"Claude Galien". Lithograph by Pierre Roche Vigneron. (Paris: Lith de Gregoire et Deneux, c. 1865)
Gabriele Falloppio