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  • Articles  (2)
  • Electron microscopy  (2)
  • Springer  (2)
  • National Academy of Sciences
  • 1975-1979  (2)
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  • Articles  (2)
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  • Springer  (2)
  • National Academy of Sciences
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  • 1
    Electronic Resource
    Electronic Resource
    The general occurrence of intramitochondrial crystals in Hydra cells (1976)
    Springer
    Cell & tissue research 171 (1976), S. 499-511 
    Details
    ISSN: 1432-0878
    Keywords: Mitochondria ; Hydra ; Crystals ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Intramitochondrial crystals are found in normal Hydra as well as in animals undergoing various conditions (budding, regenerating, eserinetreated, and sexual). They appear in all regions of the animal, but seem to be more prevalent at or near the extremities: hypostome, tentacles and basal disk. They are found in all of the seven basic cell types: interstitial, cnidocyte, nerve, epithelio-muscular, gland, mucous and digestive cells. The chemical nature of the intramitochondrial crystals is unknown and their significance remains speculative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00220241
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Histological and ultrastructural studies of the basal disk of Hydra (1975)
    Springer
    Cell & tissue research 162 (1975), S. 107-118 
    Details
    ISSN: 1432-0878
    Keywords: Basal disk ; Gastrodermis ; Mesoglea ; Hydra ; Electron microscopy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The gastrodermis and mesoglea of the basal disk of Hydra were investigated to conclude a three-part series of papers. The gastrodermis is composed of digestive cells (most predominant cell type), mucous and nerve cells (both immature and fully differentiated). The principal function of the digestive cells appears to be storage of protein, lipid and glycogen reserves which are utilized by neighboring cells. Mucous cells apparently use some of the reserves to synthesize their secretions which lubricate cells and prevent cell damage during egestion of waste through the aboral pore. The function of the gastrodermal nerve cells is uncertain. The mesoglea of the basal disk, contains the same structural components as seen in other regions of the polyp. It is reasonable to assume that it maintains the same function of cell adhesion and migration. As the mesoglea converges on the aboral pore, it loses its structural integrity and cells are sloughed off the column.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00223266
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    Paper (German National Licenses)
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