A NOVEL GENE CONTAINING A TRINUCLEOTIDE REPEAT THAT IS EXPANDED AND UNSTABLE ON HUNTINGTONS-DISEASE CHROMOSOMES by Macdonald, M, Ambrose, C, Duyao, M, Myers, R, Lin, C, Srinidhi, L, Barnes, G, Taylor, S, James, M, Groot, N, Macfarlane, H, Jenkins, B, Anderson, M, Wexler, N, Gusella, J, Bates, G, Baxendale, S, Hummerich, H, Kirby, S, North, M, Youngman, S, Mott, R, Zehetner, G, Sedlacek, Z, Poustka, A