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.
Video corresponds to Figure 5C (size bar = 10 μm, timescale in seconds, 150 ms exposure time, 150 frames, 6 frames/s display rate; QuickTime format, 248 kB).
