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  • 1
    Electronic Resource
    Electronic Resource
    Distribution of cytokeratins, vimentin and desmoplakins in normal renal tissue, renal cell carcinomas and oncocytoma as revealed by immunofluorescence microscopy (1992)
    Springer
    Virchows Archiv 421 (1992), S. 209-215 
    Details
    ISSN: 1432-2307
    Keywords: Normal renal tissue ; Renal cell carcinoma ; Cytokeratin ; Vimentin ; Desmoplakin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Forty-two renal cell carcinomas, one oncocytoma and normal renal tissue were studied for the presence of cytokeratins and vimentin. The investigations were performed by immunofluorescence microscopy applying a panel of mono- and polyclonal antibodies to intermediate filament proteins. In all tumours except chromophobic renal cell carcinoma (CRCC) and oncocytoma a co-expression of cytokeratins and vimentin could be shown. The intermediate filament expression was often, however, very heterogeneous particularly with respect to the distribution of cytokeratins and vimentin, to the clonality of the antibodies used and to the tumour areas studied. The latter could be impressively demonstrated by examining a whole tumour. In CRCC and oncocytoma all tumour cells expressed cytokeratins and, in addition, single tumour cells also expressed vimentin. In normal renal tissue we could show vimentin-positive epithelia of proximal and distal tubules, which is reported for the first time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01611177
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  • 2
    Electronic Resource
    Electronic Resource
    Involucrin expression in breast carcinomas: An immunohistochemical study (1993)
    Springer
    Virchows Archiv 423 (1993), S. 161-167 
    Details
    ISSN: 1432-2307
    Keywords: Breast carcinoma ; Cytokeratin ; Involucrin ; Immunohistochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The expression of involucrin, a structural component of the envelope of mature squamous epithelium, was studied in 166 paraffin-embedded breast carcinomas. In 41 cases (24.7%) involucrin-positive, light microscopically non squamous tumour cells were detected. The number of involucrin-positive tumour cells varied considerably from case to case. For further characterization, involucrin-positive cases were studied using monoclonal antibodies to various cytokeratins (PKK1, EAB 903, EAB 904) and, in selected cases, double immunostaining with antibodies to cytokeratins and involucrin were performed. Coexpression of involucrin and cytokeratins demonstrated by PKK1 was seen in all tumour cells, whereas coexpression of involucrin and cytokeratins detected by EAB 904 was only seen in single and scattered cells in a few cases. Cytokeratins detected by EAB 903 were not coexpressed with involucrin in our cases. Our results indicate heterogeneity of cytokeratins in breast carcinomas and suggest a dissociation in the regulation of involucrin and cytokeratin expression.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01614766
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    Paper (German National Licenses)
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