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  • 1
    Electronic Resource
    Electronic Resource
    Influences of the pia mater on the precursors of nerve cells (1972)
    Springer
    Anatomy and embryology 138 (1972), S. 227-240 
    Details
    ISSN: 1432-0568
    Keywords: Pial cells ; Proliferative cells ; Epithelioid cells ; Ependymal cells ; Cerebellum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In the developing cerebellum of 8-day old rats surgical lesions were made. During regeneration of the cerebellum the pia mater was found to penetrate inside the neural tissue. Partially differentiated Purkinje cells and granule cells, that were in close contact with the pial cells, were found atrophied. When the profilerative cells of external granular layer came into contact with the pial cells, they were reduced to a primitive type of epitheloid cells. In this instance epithelio-mesenchymal interaction was found deleterious to the precursors of neurons. However, when the epithelioid cells were freed from the contact with the pial cells by intervening basement membrane, they differentiated into ependymal cells. Such ependymal cells gave rise to small as well as large new ventriculer structures, and structures resembling chorioid plexus.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00520704
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    An evaluation of the interstitial nerve cells in the cerebellum (1970)
    Springer
    Anatomy and embryology 131 (1970), S. 283-290 
    Details
    ISSN: 1432-0568
    Keywords: Interstitial neurons ; Isodendritic neurons ; Reticular formation ; Cerebellum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Large multipolar interstitial neurons, isodendritic in their morphology, present in the medullary regions of the cerebellum are described. Histochemically these nerve cells are characterized by an intense acetylcholinesterase activity. On the basis of their morphological criteria and histochemical properties, and in continuation with our earlier study on the interstitial neurons in the white-matter regions of the central nervous system, it is suggested that the interstitial nerve cells form a vast nerve net within the central nervous system, which is an extension of the diffuse reticular formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00519972
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Neurogenesis in the cerebellum of the rat: An autoradiographic study (1972)
    Springer
    Anatomy and embryology 138 (1972), S. 155-165 
    Details
    ISSN: 1432-0568
    Keywords: Cerebellum ; Neurogenesis ; Autoradiography ; Rat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Time of origin of various neuronal elements in the cerebellum of rat was established with the aid of tritiated-thymidine-autoradiography. The earliest nerve cells to form were the Purkinje cells, and they came into existence on days 15 and 16 of gestation. Interstitial nerve cells had their genesis on days 15, 16, 17 and 18, and the marginal cells on day 16 of the embryonic development. The Golgi cells were found to come into existence on days 17, 18 and 19 of gestation. On day 21 of gestation a number of small-medium-sized nerve cells, which were smaller than the Golgi cells but larger than the granule cells, were seen to come into existence. Finally, the earliest stock of granule, basket and stellate cells, primarily in the nodulus, flocculus and para-flocculus, were observed to have been formed on the day 21 of embryogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00519378
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Heterotopic cell nests in the developing rat cerebellum (1974)
    Springer
    Acta neuropathologica 30 (1974), S. 1-9 
    Details
    ISSN: 1432-0533
    Keywords: Cell Nests ; External Granular Layer ; Capillaries ; Cerebellum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Serial sagittal sections of the postnatally developing cerebellum of Wistar rats were studied to determine the incidence, origin, and relation to other cerebellar structures of nests of heterotopic cells. These nests were found to consist of small, darkly staining cells of either irregular or elongate shape with large, dark nuclei and bore close resemblance to cells of the external granular layer. They were present in every animal from the day of birth to at least day 15 of life and were confined to the uvula, nodulus, and pyramis of the vermis. In addition, the cell nests were found to be perivascular and continuous with the external granular layer via a narrow tongue of cells surrounding capillaries which penetrated to the medullary layer of the cerebellum from the subarachnoid space. The significance of the nests in relation to other studies, and their involution after day 15 of life is briefly considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00685316
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Membrane-fusions and cytoplasmic bridges in the cells of the developing cerebellum (1977)
    Springer
    Cell & tissue research 176 (1977), S. 475-492 
    Details
    ISSN: 1432-0878
    Keywords: Membrane-fusion ; Cytoplasmic bridges ; Induction ; Cell differentiation ; Cerebellum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the developing cerebellum of the neonate rats membranefusions and cytoplasmic bridges between cells were observed. These membrane-fusions were characterized by the presence of loops of membrane and cytoplasmic bridges between the two limits of the membrane-fusions. They were found between Purkinje cells, Purkinje cells and the migratory cells, mitotically potent cells of the external granular layer, and differentiating granule cells of the internal granular layer. The membrane-fusions were found to be a transient developmental phenomenon. Issues pertaining to the universality of membrane-fusions, their significance in the induction for cell differentiation, and the problem of fixation artifacts are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00231403
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    Paper (German National Licenses)
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