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  • 1
    Electronic Resource
    Electronic Resource
    Increase in the Dense Cytoplasmic Bodies in Radiation-induced Giant Cells of the Cultured Fibroblast (1961)
    [s.l.] : Nature Publishing Group
    Nature 192 (1961), S. 891-892 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The non-irradiated, mouse subcutaneous fibroblast (strain L (ref. 3)) is roughly circular in thin sections under the electron microscope, with a single nucleus and cytoplasm containing typical mitochondria, sparse granular endoplasmic reticulum, a diffuse Golgi apparatus, numerous vesicles and ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/192891a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The ultrastructure of dentinogenesis and amelogenesis in rat molar tooth germs grown as organ cultures in vitro (1973)
    Springer
    Cell & tissue research 138 (1973), S. 171-186 
    Details
    ISSN: 1432-0878
    Keywords: Tooth germs ; Organ culture ; Differentiation ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Tooth germs from foetal rats of 17 days post-insemination were maintained in vitro for 12 days. Odontoblasts and ameloblasts differentiated and secreted their respective matrices in which mineralization occurred. The ultrastructure of the cells was qualitatively similar to that observed in normal development. Odontoblasts contained more lysosome-like bodies and were found to degenerate in some sites. Mantle dentine was formed but few von Korff fibres were observed. Calcospherites were rarely seen and the mineralizing front of dentine was predominantly linear, associated with numerous small early foci of mineral formation. Enamel showed prism formation associated with the Tomes' process of the ameloblast but some local disturbances in the pattern of enamel formation were observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00306606
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  • 3
    Electronic Resource
    Electronic Resource
    The fine structure of gastric epithelial cells in the suckling rabbit with particular reference to the parietal cell (1967)
    Springer
    Cell & tissue research 78 (1967), S. 474-483 
    Details
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The gastric parietal cells of newborn rabbits show a reduction in number and change in distribution of the smooth cytoplasmic vesicles when compared with the full term fetus. The apical surface and intracellular canaliculus become more complex. The changes are believed to be a manifestation of the onset of acid secretion. The remaining cells of the mucosa and of the submucosal connective tissue show dilatation of endoplasmic reticulum and accumulation of fat with other abnormal features of non-specific nature and unknown origin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00334282
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Electron microscopic observations on absorption in the epithelium of the guinea pig gall bladder (1962)
    Springer
    Cell & tissue research 56 (1962), S. 197-202 
    Details
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The fine structure of the epithelium of the gall bladder in the guinea pig has been examined after the resorption of “Thorotrast”. Vesicles at the apex of the epithelial cells containing “Thorotrast” give evidence of pinocytosis and particles are also found in the intercellular spaces and in dense cytoplasmic bodies. The epithelium exhibits interdigitating lateral cell membranes which are correlated with its function of resorbing large amounts of water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00325114
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  • 5
    Electronic Resource
    Electronic Resource
    The fine structure of the gall bladder epithelium of the sheep (1965)
    Springer
    Cell & tissue research 65 (1965), S. 331-339 
    Details
    ISSN: 1432-0878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The electron microscopy of the gall bladder epithelium in the sheep shows that the cells are secretory. They have an extensive Golgi apparatus and sparse endoplasmic reticulum with secretory droplets localised in the apical region and have been referred to the group known as mucoid cells. The intercellular spaces which are elaborately developed in those species whose gall bladder is primarily absorptive are poorly developed. Pinocytosis is not a prominent feature. It is believed that the features noted are correlated with the reported absence of absorption in the ungulate gall bladder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345634
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  • 6
    Electronic Resource
    Electronic Resource
    Ultrastructural changes in contents of membrane-coating granules after extrusion from epithelial cells of hamster cheek pouch (1978)
    Springer
    Cell & tissue research 187 (1978), S. 323-331 
    Details
    ISSN: 1432-0878
    Keywords: Membrane-coating granule ; Oral mucosa ; Phospholipid ; Hamster
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Membrane-coating granules of the epithelium of the hamster cheek pouch displayed a lamellated internal structure consisting of alternating thick and thin electron dense bands separated by translucent bands of equal width. The repeat distance of the contents was 8.5nm±sd 0.7nm and the thickness of the major electron dense band was 3 nm±sd 0.4 nm. After exocytosis from the cells the lamellated material became organised into extensive sheets and the dimensions changed so that the repeat distance was 10.9 nm±sd 0.9 nm but the major electron dense band was virtually unchanged at 3.3 nm±sd 1.1 nm. The narrower or intermediate dense band became progressively less easy to see and was virtually invisible at the surface of the epithelium. It is suggested that the changes observed may be due to an increase in hydration of a phospholipid/protein complex in the granules by permeation of water along the intermediate dense band.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00224374
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  • 7
    Electronic Resource
    Electronic Resource
    The sequence of events in the differentiation of the epidermis in fetal rats with particular reference to membrane-coating granules (1982)
    Springer
    Cell & tissue research 227 (1982), S. 619-631 
    Details
    ISSN: 1432-0878
    Keywords: Epidermis (rat) ; Periderm ; Membrane-coating granules ; Keratinisation ; Permeability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The sequence of events in the establishment of a keratinised epidermis has been related to age and crown rump length in fetal rats. Differentiation of the epidermis occurs under cover of the periderm throughout gestation. Ten stages are defined between 12d intra-uterine life and birth. Membrane-coating granules (MCGs) appeared at 18d (Stage 4) after the appearance of tonofilaments but before the appearance of the first “fetal” keratohyaline granules (KHGs) at 19d (Stage 5). Measurement of the position of MCGs within the cells showed a less marked concentration near the superficial border of the cells than that found at later stages. As KHGs formed, exocytosis of MCGs occurred into the intercellular space immediately deep to the periderm. It is suggested that after 19d (Stage 5) the periderm serves to retain the contents of the MCGs in this space so providing the permeability barrier and that prior to that stage the periderm itself probably provides the permeability barrier of fetal skin.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00204792
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