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  • 1975-1979  (2)
  • 1975  (2)
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Materialart
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  • 1975-1979  (2)
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  • 1
    Digitale Medien
    Digitale Medien
    Influence of adrenalectomy, total body X-irradiation and dexamethasone on the amount of CRF-Granules and “classical” neurosecretory material in the rat neurohypophysis (1975)
    Springer
    Anatomy and embryology 148 (1975), S. 267-278 
    Details
    ISSN: 1432-0568
    Schlagwort(e): Corticotropin releasing factor ; Neurosecretion ; Hypophysis ; X-irradiation ; Rat
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Notizen: Summary In 195 female Wistar rats the influence of adrenalectomy, total body X-irradiation and dexamethasone treatment on the amount of CRF-granules in the external zone of the median eminence and “classical” neurosecretory material (NSM) in the internal zone of the median and in the posterior lobe of the hypophysis has been studied. In the normal rat only very few CRF-granules occur. 15 days after adrenalectomy increased amounts of CRF-granules but normal amounts of “classical” NSM are found. X-irradiation leads to a slight diminishment of “classical” NSM in normal rats. In adrenalectomized animals X-irradiation causes no changes in the amount of “classical” NSM but a marked decrease in the amount of CRF-granules. Application of dexamethasone from the 15th to 18th day after adrenalectomy enhances the augmentation of CRF-granules in irradiated and non-irradiated rats but does not influence the amount of “classical” NSM. The findings show that no correlation exists between the quantitative changes of CRF-granules and “classical” NSM under the experimental conditions used. Therefore it is to be assumed that the release of the two substances is regulated by different control mechanisms and that the substances have a different functional significance. The observations do not exclude the possibility that CRF-granules and “classical” NSM are biochemically identical.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00319847
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Gomori-positive elementary granules in inner and outer layer of the infundibulum (1975)
    Springer
    Cell & tissue research 163 (1975), S. 503-508 
    Details
    ISSN: 1432-0878
    Schlagwort(e): Infundibulum ; Gomori-positive elementary granules ; Mammals ; Birds ; Fish
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary With the gallocyanine technique (Wittkowski, Bock and Franken, 1970) Gomori-positive substances of the infundibulum can be stained for light- and electron-microscopic examination. In various mammalian species, the size of Gomori-positive elementary granules in the outer layer is markedly different from that in the inner layer of the infundibulum. In general, the granules of the outer layer have less then half the diameter of those of the inner layer. In birds and fish, however, only small differences were found between the granules of both layers. The significance of the results is discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00218495
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
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