GOLGI APPARATUS IS ONE CONTINUOUS ORGANELLE IN PANCREATIC EXOCRINE CELL OF MOUSE

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The three-dimensional structure of the Golgi apparatus (GA) in mouse pancreatic exocrine cells was studied under an ordinary transmission electron microscope and also a high voltage electron microscope. From observations of thick sections of ZIO (Zinc-Iodide-Osmium solution)-reacted pancreatic tissues, GA was found to be a complex three-dimensional structure with its basic configuration summarized as follows: 1. Golgi cisterna is a long elongated ribbon-like structure and Golgi stack is composed of several ribbon-like cisternae organized from cis to trans. 2. The ribbon-like Golgi stack has wide expanded areas in some portions where it branches into 2 or 3 ribbon-like stacks. 3. The Golgi stack often shows a huge circular arrangement, about 10 μm in diameter, maintaining the polarity from cis to trans. 4. In some portions the direction of polarity of the stack changes: the Golgi stack in some parts rotates in the long expanding direction (X axis) maintaining each cisternal continuity. 5. According to the observations of 1 μm thick serial sections, the continuity and polarity of the Golgi stack are maintained three-dimensionally (X, Y and Z axes) and GA, as a whole, was found to be one huge continuous reticular organelle in the cell.
日本組織細胞化学会の論文