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New histochemical and ultrastructural observations on normal bovine tonsils
Author(s) -
Velinova M.,
Thielen C.,
Mklot F.,
Eicher S.,
Heinen E.,
Antoine N.,
Donga J.
Publication year - 2001
Publication title -
veterinary record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.261
H-Index - 99
eISSN - 2042-7670
pISSN - 0042-4900
DOI - 10.1136/vr.149.20.613
Subject(s) - follicular dendritic cells , ultrastructure , palatine tonsil , lymphatic system , pathology , biology , tonsil , connective tissue , lymph , follicular phase , anatomy , electron microscope , capsule , lymph node , immunology , medicine , antigen presenting cell , t cell , immune system , physics , botany , optics , endocrinology
Samples of normal bovine palatine tonsils were examined by light and electron microscopy. Like human tonsils, they were composed of crypts, subepithelial areas, follicles, and T‐dependent zones, but their welldeveloped capsule subdivided the lymphoid tissue by connective septa. B cells formed the major lymphoid component. The follicles and T‐dependent zones had morphological and histochemical features typical of peripheral lymph organs. Follicular dendritic cells were isolated and shown to be similar to human follicular dendritic cells.