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Anat Histol Embryol. 2015 Jun;44(3):161-7. doi: 10.1111/ahe.12120. Epub 2014 May 8.

Histology and ultrastructure of the lymph nodes of the buffalo (Bos bubalus).

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Department of Histology and Cytology, Faculty of Veterinary Medicine, Alexandria University, Edfina, Elbehera, 22758, Egypt.
Institute of Immunomorphology, Hannover Medical School, Germany.


Pre-scapular, femoral and mesenteric lymph nodes from five buffalo calves and five buffalo bulls were studied using light and transmission electron microscopy. The nodes were surrounded with a thin capsule of dense connective tissue and smooth muscles. Subcapsular and trabecular lymphatic sinuses were lined with endothelial cells resting on a basement membrane. The cortex was formed by lymphoid follicles and inter-follicular lymphocytes. Primary and secondary follicles were observed. The medulla was made up of medullary cords of lymphocytes separated by lymphatic sinuses. These sinuses were lined with a discontinuous epithelium and interestingly crossed by reticular fibres. High endothelial venules were found in the paracortical area. Several lymphocytes were observed infiltrating the wall of these venules. The lymph nodes of the Egyptian water buffalo showed a typical structure compared with the majority of mammals, with no age-related structural variation.

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