Topography, ultrastructure and phagocytic capacity of avian lymph nodes

The structure of the avian lymph node (ALN) is characterized by a thin capsule, thin lymphoreticular cords, and an absence of trabeculae. It is not possible to subdivide the ALN into cortex, paracortex and medulla, or to subdivide the system of sinuses into marginal, trabecular and medullary divisio...

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Bibliographic Details
Published in:Cell and tissue research 1983, Vol.228 (2), p.389-403
Main Authors: Berens von Rautenfeld, D, Budras, K.D
Format: Article
Language:English
Subjects:
Animals
Aves
Birds - anatomy & histology
Candida albicans - immunology
Cell Movement
Ducks - anatomy & histology
Geese - anatomy & histology
Granulocytes - cytology
Lymph Nodes - ultrastructure
Lymphocytes - cytology
Lysosomes - ultrastructure
Macrophages - physiology
Macrophages - ultrastructure
Phagocytosis
swans
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Summary:The structure of the avian lymph node (ALN) is characterized by a thin capsule, thin lymphoreticular cords, and an absence of trabeculae. It is not possible to subdivide the ALN into cortex, paracortex and medulla, or to subdivide the system of sinuses into marginal, trabecular and medullary divisions. The lymphoreticular cords contain avian germinal centers (AGC) with B-lymphocytes and the area of T-lymphocytes. Postcapillary venules are responsible for the recirculation of lymphocytes. Sinus reticular cells do not exist in the ALN, but free macrophages are present. The phagocytic capacity of the macrophages was determined by injection of vital dyes (India ink, Berlin blue) and inoculation with Candida cells. Macrophages filled with markers migrate from the lymph sinuses into the lymphoreticular cords and further into the AGC. The mobility of the macrophages is remarkably lower after phagocytosis of Candida cells.
ISSN:0302-766X
1432-0878
DOI:10.1007/BF00204887