An official website of the United States government
Here's how you know
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.
Crystals of GroEL digested with (a) or without (b) trypsin; (c) the diffraction image obtained on beamline BL-17U at Shanghai Synchrotron Research Facility (SSRF) from a crystal of GroEL digested with trypsin.