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)–(c) Representative membranes enriched with different type of crystals (a), (b), or (c). (d) Crystal-free grana disc. Insets are 3D representations of the entire patch used for the segmentation to obtain the complexes' dimension distributions. z scale for all high resolution images 0–8 nm.
