Eine elektronenmikroskopische Zytologie-Untersuchung zur Untersuchung der submikroskopischen Struktur des Zytoplasmas. Zu den wichtigsten Erkenntnissen gehört die Identifizierung des endoplasmatischen Retikulums und seine Unterscheidung in glatte und raue Typen.
1848 x 1352 px | 31,3 x 22,9 cm | 12,3 x 9 inches | 150dpi
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. Cytology. Cytology. The electron microscope studies published to date on the submicro- scopic structure of the cytoplasm are more or less in general agreement concerning the reality of the endoplasmic reticulum, but considerable. r' Figure 3-24. Electron Micrograph of Portion of Cytoplasm of Rat Parenchymal Liver Cell. Note local differentiation of membrane elements of the endoplasmic reticulum into smooth- and rough-surfaced types. The smooth-surfaced elements (ss) appear as vesicles and tubules disposed in discontinuous groups mostly at the periphery of the cell. The rough-surfaced elements (rsj rso) are arranged more or less parallel to one another in large arrays. Profiles of rough-surfaced elements sectioned normal to their surface are marked as rsj, and oblique to their surface as rso. Points of continuity between the smooth- and rough-surfaced elements are indicated by arrows. Numerous mitochondria (m) are seen in the field. (From Palade, G. E., 1956. "The Endoplasmic Reticulum, " J. Biophys. Biochem. CytoL, 2, Suppl., Fig. 3, Plate 33.) confusion still exists regarding terminology and interpretation of indi- vidual components of the system. For example, the cisternae are inter- preted by Porter and Palade as pairs of membranes arranged in parallel and connected at their ends. Sjostrand (1956), on the other hand, suggests that the cisternae actually represent a discontinuous series of STRUCTURE AND FUNCTION OF CYTOPLASMIC ORGANELLES / 53. 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 work.. Wilson, G. B. (George Bernard), 1914-; Morrison, John H. (John Herbert), 1927-. New York, Reinhold
