Summary
Two male sex accessory glands of the mouse, seminal vesicle and coagulating gland, were compared with the aim of relating differences in the morphology of organelles to the kinetics of the secretory process. The epithelial cells of the two glands were assessed by morphometric analysis, cytochemical staining, and electron-microscopic autoradiography after administration of a labeled amino acid. The rough endoplasmic reticulum of the seminal vesicle comprised narrow parallel cisternae, while that of the coagulating gland was greatly distended and occupied a much larger percentage of the cytoplasmic volume. Radioactively labeled products were secreted much more rapidly in the seminal vesicle than in the coagulating gland. The primary point of difference in kinetics of intracellular transport between the two glands was in exit of material from the rough endoplasmic reticulum. The more rapid drainage of the rough endoplasmic reticulum may be related to its relatively greater membrane surface density and lesser internal volume. In contrast, similarities in size and cytochemical staining in the Golgi apparatus of the two glands were accompanied by similar kinetics of intracellular transport of secretory protein through this organelle.
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Samuel, L.H., Flickinger, C.J. The relationship between the morphology of cell organelles and kinetics of the secretory process in male sex accessory glands of mice. Cell Tissue Res. 247, 203–213 (1987). https://doi.org/10.1007/BF00216563
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DOI: https://doi.org/10.1007/BF00216563