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, Schematic of the hierarchical structure of A. yamamai silk. B and C, The polarized light microscopy image of A. yamamai silk. D, Cross-sectional SEM image of A. yamamai silk after tensile fracture. E, Cross-sectional SEM image of A. yamamai silk fiber. The fiber was embedded in epoxy resin and further broken in liquid nitrogen.
