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.
Low-power reflected-light stereozoom microscope images of FG-2 mattress subsamples acquired at 10×. (a–c) Three sections of the synthetic, woven outer cover materials, including fiber-filled bead (b). (d) Inner cover material with natural, woven fibers.
