Twenty nine hybrids retaining fragments of human chromosome 2 were characterized by reverse-FISH and by a panel of 106 STSs. Most of the hybrids are radiation hybrids retaining fragments of chromosome 2 as the only human contribution. The hybrid panel dissected chromosome 2 in 69 distinct physical regions, allowing a fine mapping of the sequences. These hybrids are particularly useful as starting points for generation, via Alu-PCR, of specific partial chromosome paints (PCP). We also report the mapping by FISH of 60 YACs located on chromosome 2. These resources can be advantageously used in cytogenetic investigations, with particular reference to cancer cytogenetics, as illustrated with the renal carcinoma cell line KRC/Y.
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