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.
Schematic of 4R and 3R tau. Boxes above each line correspond to the 18-aa imperfect repeats. Dark boxes below each line correspond to regions encoded by alternatively spliced exons. The inclusion or excision of sequences encoded by the exon in the repeat region leads to the synthesis of 4R or 3R tau, respectively. Arrows above the line mark the positions of amino acid substitutions that lead to FTDP-17.
