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  • 1
    ISSN: 1432-2307
    Keywords: S-100 antigen ; PAP method ; Liposarcoma ; Cartilaginous tumours
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary S-100 antigen, originally believed to be unique to the nervous system, has recently been found in cell types of non-neuroectodermal origin such as chondrocytes and adipocytes. These findings suggested the possibility of detecting the antigen in tumours derived from such cells. Using the PAP method and an anti-ox brain S-100, the antigen was found in the cells of human chondrosarcomas, chondroblastomas and liposarcomas. In contrast, fibrous histiocytomas and fibrosarcomas, tested to verify the cellular specificity of the S-100 immunoreaction, did not exhibit S-100-containing cell types. The present data indicate the usefulness of the S-100 antigen as a diagnostic and investigative tool in defined neoplasms of non-neuroectodermal origin, such as chondroid tumours and liposarcoma.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Virchows Archiv 433 (1998), S. 5-12 
    ISSN: 1432-2307
    Keywords: Key words Oncocytic neoplasm ; Oncocytic adenoma ; Oncocytic carcinoma ; Mitochondrial DNA ; Oxidative phosphorylation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract  Oncocytic tumours represent a distinctive set of lesions with distinctive granular cytoplasmic eosinophilia of the neoplastic cells. These cells are called oncocytes because of the ”swollen” appearance they have as the result of a striking accumulation of mitochondria. Although generally uncommon, oncocytic tumours are by no means rare and have been reported, with different frequencies, in virtually every organ. A variety of biochemical and molecular changes have been identified, and the aberrant biogenesis of mitochondria in oncocytic cells bears intriguing similarities to that of a group of degenerative disorders known as mitochondrial encephalomyopathies. Although the relationship between the accumulation of mitochondria and the occurrence of tumours is unknown, investigation into the cellular alterations of oncocytes may further our knowledge of a variety of important biological processes such as proliferation, energy production and ageing.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-0878
    Keywords: Mesonephros ; Metanephros ; Protein reabsorption ; Immunohistochemistry ; Development, ontogenetic ; Man
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary The presence of different serum proteins in the cells of the proximal tubule of both meso- and metanephric nephrons in human embryos (7th–12th week of intrauterine life) was investigated using immunohistochemistry. Endogenous lysozyme, alpha-1-antitrpysin and ferritin were detected in mesonephric proximal tubules and, starting from the 8th week, also in metanephric proximal tubules. Our observations provide information concerning the appearance and distribution of tubular protein reabsorption during the early stages of development.
    Type of Medium: Electronic Resource
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