Mast cells in the lymphatics of the frog tongue

  • Tsuneo Fujita
  • Kenichi Takaya


In Rana catesbiana (10 adults) and Rana nigromaculata (2 adults), a number of mast cells are found within the lymphatics of the tongue. The round mast cells cluster in a monocellular layer in certain parts of the lymphatic walls and are either in close adhesion to the endothelial cells, or in contact with them with a slender cytoplasmic process.

Microscopic examination of the lymph taken from the sublingual lymph sac reveals that the mast cells on the lymphatic wall can become free to move into the lymph only by vigorous massage of the tongue. Otherwise the lymph contains only a few free mast cells.

The origin of the mast cells in this peculiar, supra-endothelial position is discussed. A figure that might suggest the migration of mast cells from the connective tissue into the lymphatics was encountered only rarely.


Endothelial Cell Mast Cell Connective Tissue Microscopic Examination Cytoplasmic Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag 1966

Authors and Affiliations

  • Tsuneo Fujita
    • 1
  • Kenichi Takaya
    • 1
  1. 1.Department of AnatomyUniversity of Okayama School of MedicineOkayamaJapan

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