Morphological detection of X- and Y-chromosomes in smears and paraffin-embedded tissues using a non-isotopic in situ hybridization technique (NISH) |
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Authors: | P Betz J Tübel W Eisenmenger A Nerlich G Baretton |
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Institution: | (1) Department of Legal Medicine, University of Munich, Frauenlobstrasse 7 a, D-80337 Munich, Germany;(2) Department of Pathology, University of Munich, Frauenlobstrasse 7 a, D-80337 Munich, Germany |
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Abstract: | Pharyngeal smears and paraffin-embedded tissue specimens (skeletal muscle, kidney) obtained from 10 male and 10 female individuals were evaluated using non-isotopic in situ hybridization (NISH) with commercial X- and Y-specific biotinylated probes which recognize the pericentromeric regions DXZ1 and DYZ1/DYZ3 of the X- and Y-chromosome, respectively. The results provide evidence that the morphological sex determination of a single cell can be performed by critical application of this staining method leading to one nuclear signal in male cells using the Y-specific probe whereas female cells are negative. In situ hybridization of female tissues with an X-specific probe results regularly in 2 signals whereas male cells show only one spot in the nucleus. |
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Keywords: | In situ hybridization Sex determination |
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