Abstract
The presence and ultrastructural characteristics of mast cells and globule leucocytes in bile ducts of the reindeer have not been previosly documentated. Tissue blocks of ductus bepaticus communis from six reindeer were processed by commonly used methods for TEM and examined with a JEOL JEM 100 S electron microscope. The present material originates from reindeer without clinical signs of parasites. However, several types of granulated cells were identifiable. The granules of connective tissue and subepithelial mast cells were small and mostly diffusely electron dense but also fine granular matrices were shown. The globules of intraepithelial globule leucocytes were fewer in number and distinctly larger than the granules of the mast cell. In addition there were noted intraepithelial granulated cells appearing similar to the neuroendocrinic cells reported in bovine bile ducts.
Highlights
The presence of numerous mast cells and globule leucocytes in tissues of animals and man has been associated with parasitic infections (Befus and Bienenstock 1982)
Mast cells and globule leucocytes were identified according to the characteristics described for these cells in general (Rahko 1971)
Connective tissue mast cells were rare in the tissue samples (Figs. 1 to 3)
Summary
The presence of numerous mast cells and globule leucocytes in tissues of animals and man has been associated with parasitic infections (Befus and Bienenstock 1982). It has been established that the properties of mast cells depend on the animal species and even on the tissue location (Barrett and Metcalf 1984). Since no reports on mast cells and globule leucocytes in bile ducts of the reindeer are available, this study seemed appropriate. The tissue samples originated from six reindeer
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