Summary
Principal cells in the initial segment of the epididymis in horses, cattle, pigs, sheep, dogs, cats, and rabbits have an abundant, partly rough, endoplasmic reticulum and a large Golgi complex. Small vacuoles with opaque content seem to be formed by the Golgi complex and move to the cell apex, where they empty their contents into the lumen by a merocrine mechanism.
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Financial support for this study was received from The Swedish Council for Forestry and Agricultural Research
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Nicander, L., Malmqvist, M. Ultrastructural observations suggesting merocrine secretion in the initial segment of the mammalian epididymis. Cell Tissue Res. 184, 487–490 (1977). https://doi.org/10.1007/BF00220971
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DOI: https://doi.org/10.1007/BF00220971