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. Author manuscript; available in PMC: 2015 Nov 6.
Published in final edited form as: Am J Med Genet B Neuropsychiatr Genet. 2009 Apr 5;0(3):425–429. doi: 10.1002/ajmg.b.30826

FIG. 1.

FIG. 1

Frequency distribution of trinucleotide repeat lengths in normal and HD chromosomes. Repeat lengths are defined as follows: Range I has fewer than 26 CAGs. As no changes were noted, Range I is not included for clarity. Range II has between 27and 35 CAGs and is the particular emphasis of our study. Range III has between 36 and 39 CAGs and is incompletely penetrant. Range IV has 40 or more CAGs and is completely penetrant.