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  • 1
    Electronic Resource
    Electronic Resource
    Über die Feinstruktur von Mammamischtumoren der Hündin (1974)
    Springer
    Virchows Archiv 362 (1974), S. 157-167 
    Details
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The chondroid areas of 11 mixed mammary gland tumours taken from female dogs were studied by light and electron microscopy to determine the histogenesis of their cells. Their abundance of directed and periodically striated fibrils about 70 Å thick, their large fields of glycogen, their ability to form basal membranlike structures and the microscopically visible development suggested that the cells were neoplastic myoepithelial cells. The findings indicate that these neoplastic cells are able to produce the chondroid matrix as well as the material for the synthesis of collagen fibrils.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00432393
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Über die Feinstruktur von Mammamischtumoren der Hündin (1976)
    Springer
    Virchows Archiv 371 (1976), S. 219-226 
    Details
    ISSN: 1432-2307
    Keywords: Canine mammary gland ; Mixed tumor ; Myoepithelial cells ; Ultrastructure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden licht- und elektronenmikroskopisch Spindelzellen fischzugartiger Verbände in 19 Mammamisehtumoren von Hündinnen untersucht. Die elektronenmikroskopischen Befunde sprechen dafür, daß es sich bei den spindeligen Tumorzellen meist um Zellen myothelialen Ursprungs handelt. Es wurden jedoch auch spindelzellige Verbände gefunden, die aus Fibroblasten bzw. Pibrocyten bestehen. Im lichtmikroskopischen Bereich ist eine sichere Unterscheidung nicht in jedem Fall möglich.
    Notes: Summary Spindle cells of myomatous formations of 19 canine mixed mammary tumors were studied by light and electron microscopy. The EM findings indicate that the spindleshaped tumor cells are mostly of myoepithelial origin. However there were also formations of spindle cells which consisted of fibroblasts or fibrocytes. By light microscopy they are not always clearly distinguishable.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00433069
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Über die Feinstruktur von Mammamischtumoren der Hündin (1975)
    Springer
    Virchows Archiv 367 (1975), S. 219-229 
    Details
    ISSN: 1432-2307
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es wurden licht- und elektronenmikroskopisch die Anfangsstadien myothelialer Proliferation anhand von 14 Mammamischtumoren der Hündin untersucht. Es wurden 2 Frühformen unterschieden: 1. Proliferationen innerhalb der Basalmembran unter teilweiser Beibehaltung des organoiden Verbandes. 2. Proliferationen bei schnellem Aufbrechen der Basalmembran und Verlagerung von Tumorzellen in das umgebende Bindegewebe. Es wird darauf hingewiesen, daß die intracellulären Fasern myoepithelialer Tumorzellen periodisch gestreift und dicker sind als die normaler Myoepithelzellen. Es wird die Ansicht vertreten, daß sowohl unstrukturierte als auch faserig strukturierte intercelluläre Substanz in den Anfangsstadien ein Produkt der beschriebenen Tumormyoepithelzellen darstellen.
    Notes: Summary The early stages of myoepithelial proliferation in 14 mixed canine mammary tumours were studied by light- and electron microscopy. Two different early stages can be distinguished: 1. Proliferations inside the basal lamina with partial maintenance of the organoid pattern. 2. Proliferations with a break through the basal lamina and transposition of tumour cells into the surrounding connective tissue. The intracytoplasmic fibrillae of myoepithelial tumour cells are striped periodically and thicker than those of normal myothelia. It ist suggested that the amorphous as well as the fibrous intercellular substance in the early stages is derived from the described myoepithelial tumour cells.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00430709
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    Paper (German National Licenses)
    Fulltext
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