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Quarterly Journal of Microscopical Science, Vol s3-101, 389-394, Copyright © 1960 by Company of Biologists
1 Cytological Laboratory, Department of Zoology, Oxford University; and Department of Human Anatomy, Oxford University)
The classical site of the Golgi apparatus, the Purkinje cells of the cerebellum of owls, has been examined by electron microscopy. The greater part of the cytoplasm consists of aggregates of closely packed granular membranes ofendoplasmic reticulum. The objects described by Dalton and Felix in electron micrographs and called by them the Golgi apparatus are rarely seen in these preparations. It seems likely that the Golgi apparatus of this cell as seen in the optical microscope is formed by the deposition of silver or osmium on the membranes of the endoplasmic reticulum, which form a network throughout the cytoplasm of this cell.