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.
Diagram summarizing cell lineage relationships in normal (physiological) cell turnover and posttraumatic regeneration in the digestive tube of different bilaterian animal models. Straight arrows show cell lineage relationships in physiological cell turnover (black), posttraumatic regeneration (red), and development (blue). Circular arrows indicate self-renewal.
