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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Ultrasructure Research 36 (1971), S. 419-424 
    ISSN: 0022-5320
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0040-4020
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1546-170X
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Left ventricular remodeling is a major cause of progressive heart failure and death after myocardial infarction. Although neoangiogenesis within the infarcted tissue is an integral component of the remodeling process, the capillary network is unable to support the greater demands of the ...
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 2 (1968), S. 15-15 
    ISSN: 1432-0827
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 24 (1977), S. 215-222 
    ISSN: 1432-0827
    Keywords: Mineralization ; Osteodentin ; Intracellular ; Ultrastructure ; Microanalysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Notes: Summary Newly formed osteodentin obtained from the anterior extremities of fetal or young rat incisors was observed by means of electron microscopy and electron probe X-ray microanalysis. Cells related to osteodentin formation frequently showed membrane bound intracellular bodies containing varying amounts of fine, needle-shaped crystals, which were identified as apatite. The intracellular clusters of apatite crystals were extruded from the cells through membrane fusion or cellular degeneration. These extracellular clusters seemed to be gradually incorporated into the mineralizing collagenous matrix, which developed around them. Frequent occurrence of dense, dotshaped or filamentous profiles suggested that the dense bodies seen in the perinuclear regions or in the Golgi area were the sites of crystal formation. Energy dispersive X-ray point analysis showed that the intracellular or extracellular apatite clusters contained sulfur in a concentration higher than was present in the mineralizing collagenous matrix. Furthermore, wave dispersive X-ray line analysis showed that the concentration of sulfur was higher in the osteodentin matrix than in the dentin matrix. The sulfur detected is presumed to be contained in acid mucopolysaccharides, which were distributed more heavily in the osteodentin matrix than in the dentin matrix. On the basis of these data, it was concluded that the unique chemical and structural characteristics of the osteodentin result primarily from the incorporation of apatite clusters of intracellular origin and associated acid mucopolysaccharides.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Calcified tissue international 4 (1969), S. 305-313 
    ISSN: 1432-0827
    Keywords: Decalcification ; Chromium Sulphate ; Ultrastructure ; Dentine
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine , Physics
    Description / Table of Contents: Résumé Une méthode nouvelle de décalcification histologique utilisant des solutions aqueuses de sulfate de chrome basique (III) est appliquée à des coupes fines de dentine humaine adulte. L'observation en microscopie électronique montre une bonne conservation structurale dans les régions extra-cellulaires. L'aspect de la matrice péricanaliculaire est particulièrement étudié. On y reconnait plusieurs couches bien individualisées. Une bonne concordance est notée entre les résultats obtenus par microscopie optique et électronique, permettant d'établir une hypothèse nouvelle sur la formation de la dentine péricanaliculaire.
    Abstract: Zusammenfassung Eine kürzlich entwickelte Methode zur histologischen Entkalkung mittels wäßriger Lösungen von basischem Chrom III-Sulfat wird an dünnen Schliffen von menschlichem Dentin Erwachsener angewandt. Darauffolgende Untersuchungen am Elektronenmikroskop zeigten eine sehr gute Wiedergabe der morphologischen Einzelheiten in den Extrazellulär-Regionen. Besonders beachtet wurde das Aussehen der peritubulären Matrix, innerhalb welcher gut differenzierte Schichten erkannt werden konnten. Eine wesentliche Übereinstimmung bestand zwischen Elektronenmikroskopie und kürzlich durchgeführten Untersuchungen an derselben Matric unter dem Mikroskop. Diese Methode ermöglicht es, eine neue Hypothese über die Bildung des peritubulären Dentins aufzustellen.
    Notes: Abstract A recently-developed method for histological decalcification using aqueous solutions of basic chromium (III) sulphate has been applied to thin sections of adult human dentine. Subsequent studies in the electron microscope show a very good retention of morphological detail in the extracellular regions. Special attention was given to the appearance of the peritubular matrix within which well-differentiated layers were recognised. There was substantial agreement between electron microscopy and recent studies of the same matric under the light microscope, allowing a novel hypothesis for the formation of the peritubular dentine.
    Type of Medium: Electronic Resource
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