Analysis of the huntingtin gene reveals a trinucleotide-length polymorphism in the region of the gene that contains two CCG-rich stretches and a correlation between decreased age of onset of Huntington's disease and CAG repeat number

Abstract
David C. Rubinsztein, David E. Barton, B.C.Clare Davison, Malcolm A. Ferguson-Smith; Analysis of the huntingtin gene reveals a trinucleotide-length polymorphis