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.
The specimens are mounted on a ring-shaped sample holder (a), between two coverslips at 5-10 μm (b, cells) or ~30 μm (c, tissue) distance. 100-nm gold beads are sparsely deposited onto the bottom coverslip for use during the aberration correction.
