Abstract
Nuclei isolated from normal human brain tissue, collected from six autopsies, were hybridized with a panel of nine satellite DNA probes specific for the centromeric regions of chromosomes 1, 6, 7, 10, 11, 17, 18, and the X and Y chromosomes. The results did not confirm the recently reported trisomy 7 and loss of sex chromosomes observed in metaphases obtained from normal brain tissue after short-term cultures; however, cells of all six brains displayed somatic pairing of the chromosome 17 centromeres in approximately 50% of the nuclei.
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