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  • SPACE SCIENCES  (5)
  • EARTH RESOURCES AND REMOTE SENSING  (1)
  • Parotid  (1)
  • 1970-1974  (7)
Collection
Publisher
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 107 (1970), S. 403-420 
    ISSN: 1432-0878
    Keywords: Parotid ; Peroxidase ; Secretion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Die Lokalisation endogener Peroxydase wurde in der Glandula parotis der Ratte mit der Methode von Graham und Karnovsky (1966) untersucht. Lichtmikroskopisch ist das Reaktionsprodukt im basalen Cytoplasma, in den Sekretgranula und, nach Pilocarpinreizung, in den Lumina der interzellulären Sekretkapillaren, der Drüsenendstücke und der Schaltstücke nachweisbar. Der Speichel enthält eine Peroxydase, die durch Hitze (100°) und durch KCN und 3-Amino-1,2,4-Triazol hemmbar ist. Der Speichel zeigt bei 415 mμ eine Schulter im Absorptionsspectrum, die nach Komplexbildung mit H2O2 um 15 mμ nach rechts verschoben wird. Elektronenmikroskopisoh läßt sich das Reaktionsprodukt der Peroxydase in allen Cisternen des rauhen endoplasmatischen Reticulums, einschließlich der perinucleären Cisterne, in glattwandigen Bläschen zwischen rauhem endoplasmatischen Reticulum und Golgi-Membranstapeln, in den kondensierenden Vacuolen und in allen Sekretgranula nachweisen. Die Cisternen des Golgi-Apparates enthalten selten Reaktionsprodukt. In der Glandula parotis der Ratte sind vorwiegend die kondensierenden Vacuolen, in geringerem Maße auch die Cisternen des Golgi-Apparates, an der Segregierung und Kondensierung von Peroxydase beteiligt.
    Notes: Summary The localization of endogenous peroxidase was investigated in the parotid gland of the rat by the method of Graham and Karnovsky (1966). By light microscopy, the reaction product was localized in the basal cytoplasm, in secretion granules, and, after injection of pilocarpine hydrochloride, in the lumina of the intercellular canaliculi, the acini and the intercalated ducts. The peroxidase reaction of the saliva collected from the oral cavity can be suppressed by heat (100° C), by 3-amino-1,2,4-triazole, and by KCN. Absorption spectra of the saliva show a shoulder at 415 mμ which is shifted by 15 mμ towards longer wave lengths after complexing with H2O2. At the ultrastructural level, reaction product is present in all cisternae of the rough endoplasmic reticulum including the perinuclear cisternae, in smooth vesicles located between the rough endoplasmic reticulum and the stacks of Golgi cisternae, in condensing vacuoles, and in all secretion granules. The Golgi cisternae seldom contain reaction product. The results show that in the parotid gland of the rat, the condensing vacuoles and, to a lesser extent, the cisternae of the Golgi apparatus function in the segregation and condensation of peroxidase.
    Type of Medium: Electronic Resource
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  • 2
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    Unknown
    In:  Other Sources
    Publication Date: 2019-06-27
    Description: Mass spectroscopy for solar system exploration, discussing ion sources, mass analyzers and ion detectors meeting mission requirements
    Keywords: SPACE SCIENCES
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  • 3
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    Unknown
    In:  Other Sources
    Publication Date: 2019-06-27
    Description: Absolute production rates of He 3 and Ne 21 in average chondrites, determining radiation ages of stony meteorites aged less than two million years
    Keywords: SPACE SCIENCES
    Type: ; - DISCRETE CONTROL S
    Format: text
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  • 4
    Publication Date: 2019-07-13
    Description: The author has identified the following significant results. Multidiscipline team interpretation and mapping of resources for Crook County is complete on 1:250,000 scale enlargements of ERTS imagery and 1:120,000 hi-flight photography. Maps of geology, soils, vegetation-land use and land resources units were interpreted to show limitations, suitabilities, and geologic hazards for land use planning. Mapping of lineaments and structures from ERTS imagery has shown a number of features not previously mapped in Oregon. A multistage timber inventory of Ochoco National Forest was made, using ERTS images as the first stage. Inventory of forest clear-cutting practices was successfully demonstrated with color composites. Soil tonal differences in fallow fields correspond with major soil boundaries in loess-mantled terrain. A digital classification system used for discriminating natural vegetation and geologic material classes was successful in separating most major classes around Newberry Caldera, Mt. Washington, and Big Summit Prairie.
    Keywords: EARTH RESOURCES AND REMOTE SENSING
    Type: E75-10416 , NASA-CR-143406
    Format: application/pdf
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  • 5
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    In:  Other Sources
    Publication Date: 2019-06-27
    Description: Aubrite radiation age dating for stony meteorites lifetimes as function of collisional destruction, using Ne 21/Al 26 methods
    Keywords: SPACE SCIENCES
    Type: ; 99-102 (
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  • 6
    Publication Date: 2019-06-27
    Keywords: SPACE SCIENCES
    Type: Journal of Geophysical Research; 77; Nov. 1
    Format: text
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  • 7
    Publication Date: 2019-06-27
    Description: The instrumentation is analyzed for determining the composition of the clouds on Venus. Direct analysis of the gas phase atmosphere, and the detection of ferrous chloride with a mass spectrometer are dicussed along with the mass analyzer, and the pre-separation of cloud particles from the ambient atmosphere.
    Keywords: SPACE SCIENCES
    Type: NASA-CR-132766 , GCA-TR-73-3-N
    Format: application/pdf
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