Abstract
The seemingly autonomous amplification of naturally occurring triplet repeat sequences in the human genome has been implicated in the causation of human genetic disease, such as the fragile X (Martin-Bell) syndrome, myotonic dystrophy (Curshmann-Steinert), spinal and bulbar muscular atrophy (Kennedy's disease) and Huntington's disease. The molecular mechanisms underlying these triplet amplifications are still unknown. We demonstrate here that a synthetic (CGG)17 oligodeoxyribonucleotide can be utilized as hybridization probe to visualize some of the triplet repeats in the human genome. This technique may help in studies aimed at the elucidation of the amplification mechanism.
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