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.
Colours denote different tissues (fat body, orange; gut, purple). Dashed lines show tissue‐specific responses that are both necessary and sufficient to extend lifespan.
