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 large proportion of RACEfrags are tissue-specific. (A) Cumulative number of RACEfrags identified in the 12 tissues and three cell lines; (B) numbers of RACEfrags specific to a single tissue; (C) proportion of exonic (green), intronic (blue), and external (orange) RACEfrags identified by one, two, three, or more tissues.
