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.
A histogram showing the number of icosahedral virus structures deposited to the PDB each year and the method of structure determination (X-ray crystallography or cryo-electron microscopy). Since 2010, cryoEM has become the dominant method of structure determination.