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  • Title: An easy and reliable procedure of microdissection technique for the analysis of chromosomal breakpoints and marker chromosomes.
    Author: Weimer J, Kiechle M, Senger G, Wiedemann U, Ovens-Raeder A, Schuierer S, Kautza M, Siebert R, Arnold N.
    Journal: Chromosome Res; 1999; 7(5):355-62. PubMed ID: 10515210.
    Abstract:
    Microdissection in combination with reverse painting fluorescence in-situ hybridization (FISH) is a very effective method to identify breakpoints and rearrangements of derived chromosomes and reveal the chromosomal origin of marker chromosomes. We describe an innovation that allows a convenient, fast and safe isolation of microdissected fragments as currently available protocols. The microdissected chromosomes are harvested in a collection drop located in a movable micropipette adjusted to a second micromanipulator under microscopic observation. We used this technique to analyze several cytogenetic aberrations. In order to evaluate the efficiency of our microdissection procedure, we compared the results obtained with microdissection probes made from only one fragment with those obtained with more than six microdissected fragments. In all cases, the single-fragment microdissections were sufficient to provide probes.
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