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Distribution of the lingual lymphoid tissue in domestic ruminants

Sofie Breugelmans (UGent) , Christophe Casteleyn (UGent) , Paul Simoens (UGent) and Wim Van Den Broeck (UGent)
Author
Organization
Abstract
The distribution and organisation of the intralingual lymphoid tissue was studied in sheep, goat and cattle. For each species, the tongues of two animals were harvested and divided in sample blocks extending over the total surface of the tongue. With 2.5 mm intervals, ten serial histological sections were made for conventional histological staining (haematoxylin-eosin, Van Gieson, Massons trichrome) and immunohistochemical staining of lymphoid cells (anti-CD3, anti-CD21, anti-CD45). Lymphocytes were scattered in the subepithelial propria-submucosa and in the connective tissue cores of the lingual papillae. The connective tissue cores of fungiform papillae, including those located on the lingual apex, and vallate papillae showed relatively more lymphocytes than the propria-submucosa. Lymphoid cell aggregations were even more abundant beneath the grooves surrounding the vallate papillae in small ruminants. In cattle, a well-organised lingual tonsil was additionally found at the root of the tongue. CD3-positive lymphocytes were observed in all species examined. CD21-positive lymphocytes were numerous in the lymphoid nodules of the bovine lingual tonsil but very scarce in the ovine and caprine tongues. Therefore, the lymphoid cell aggregations in the tongues of small ruminants should not be referred to by the term lingual tonsil.
Keywords
FILIFORM, CELLS, TONSILS, SCANNING-ELECTRON-MICROSCOPY, MORPHOLOGY, MUCOSAL, PAPILLAE, DORSAL SURFACE, BOVINE TONGUE, SPECIFIED RISK MATERIAL

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Citation

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Chicago
Breugelmans, Sofie, Christophe Casteleyn, Paul Simoens, and Wim Van Den Broeck. 2011. “Distribution of the Lingual Lymphoid Tissue in Domestic Ruminants.” Anatomia Histologia Embryologia 40 (6): 426–432.
APA
Breugelmans, S., Casteleyn, C., Simoens, P., & Van Den Broeck, W. (2011). Distribution of the lingual lymphoid tissue in domestic ruminants. ANATOMIA HISTOLOGIA EMBRYOLOGIA, 40(6), 426–432.
Vancouver
1.
Breugelmans S, Casteleyn C, Simoens P, Van Den Broeck W. Distribution of the lingual lymphoid tissue in domestic ruminants. ANATOMIA HISTOLOGIA EMBRYOLOGIA. 2011;40(6):426–32.
MLA
Breugelmans, Sofie, Christophe Casteleyn, Paul Simoens, et al. “Distribution of the Lingual Lymphoid Tissue in Domestic Ruminants.” ANATOMIA HISTOLOGIA EMBRYOLOGIA 40.6 (2011): 426–432. Print.
@article{2041610,
  abstract     = {The distribution and organisation of the intralingual lymphoid tissue was studied in sheep, goat and cattle. For each species, the tongues of two animals were harvested and divided in sample blocks extending over the total surface of the tongue. With 2.5 mm intervals, ten serial histological sections were made for conventional histological staining (haematoxylin-eosin, Van Gieson, Massons trichrome) and immunohistochemical staining of lymphoid cells (anti-CD3, anti-CD21, anti-CD45). Lymphocytes were scattered in the subepithelial propria-submucosa and in the connective tissue cores of the lingual papillae. The connective tissue cores of fungiform papillae, including those located on the lingual apex, and vallate papillae showed relatively more lymphocytes than the propria-submucosa. Lymphoid cell aggregations were even more abundant beneath the grooves surrounding the vallate papillae in small ruminants. In cattle, a well-organised lingual tonsil was additionally found at the root of the tongue. CD3-positive lymphocytes were observed in all species examined. CD21-positive lymphocytes were numerous in the lymphoid nodules of the bovine lingual tonsil but very scarce in the ovine and caprine tongues. Therefore, the lymphoid cell aggregations in the tongues of small ruminants should not be referred to by the term lingual tonsil.},
  author       = {Breugelmans, Sofie and Casteleyn, Christophe and Simoens, Paul and Van Den Broeck, Wim},
  issn         = {1439-0264},
  journal      = {ANATOMIA HISTOLOGIA EMBRYOLOGIA},
  keyword      = {FILIFORM,CELLS,TONSILS,SCANNING-ELECTRON-MICROSCOPY,MORPHOLOGY,MUCOSAL,PAPILLAE,DORSAL SURFACE,BOVINE TONGUE,SPECIFIED RISK MATERIAL},
  language     = {eng},
  number       = {6},
  pages        = {426--432},
  title        = {Distribution of the lingual lymphoid tissue in domestic ruminants},
  url          = {http://dx.doi.org/10.1111/j.1439-0264.2011.01088.x},
  volume       = {40},
  year         = {2011},
}

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