Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
(A) Normal-size alleles are usually interrupted by one or more tetranucleotides (NCTG, N = G, T) and comprise less than 26 CCTG repeat units. (B) Pathogenic repeat expansions are typically uninterrupted and carry 75 or more CCTG repeat units. (C) Proposed updated model of the architecture of CNBP repeat expansions.
