. Cytology. Cytology. tensions (annular tubules) which project into the nucleus and out into the cytoplasm. Projections or blebs from the nuclear membrane (Figure 4-3) and the delamination of segments of it into the cytoplasm has also been described. The association of electron-dense granules with the outer r;. / Figure 4-4. Electron Micrograph Showing Parts of Two Nuclei in a Bi- nucleate, Acinar Cell of Rat Pancreas. Small, electron-dense cytoplasmic particles are shown associated with the membrane elements of the endo- plasmic reticulum and the outer membrane of the nuclear envelope. The ap
. Cytology. Cytology. tensions (annular tubules) which project into the nucleus and out into the cytoplasm. Projections or blebs from the nuclear membrane (Figure 4-3) and the delamination of segments of it into the cytoplasm has also been described. The association of electron-dense granules with the outer r;. / Figure 4-4. Electron Micrograph Showing Parts of Two Nuclei in a Bi- nucleate, Acinar Cell of Rat Pancreas. Small, electron-dense cytoplasmic particles are shown associated with the membrane elements of the endo- plasmic reticulum and the outer membrane of the nuclear envelope. The appearance of the outer nuclear membrane and its associated particles makes it indistinguishable essentially from the rough-surfaced membranes of the endoplasmic reticulum. A pore in one nuclear envelope is marked by an arrow. (From Watson, M. L., 1955. "The Nuclear Envelope. Its Structure and Relation to Cytoplasmic Membranes," J. Biophys. Biochem. Cytol., 1, Fig. 5, Plate 73.) layer of the nuclear envelope (Figure 4-4) and continuity between this layer and certain elements of the endoplasmic reticulum have been observed in both plant and animal cells (Figure 4-5). The morphological similarity and apparent continuity between the nuclear envelope and STRUCTURE AND FUNCTION OF THE NUCLEUS / 77. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wilson, G. B. (George Bernard), 1914-; Morrison, John H. (John Herbert), 1927-. New York, Reinhold
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