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.
Scanning electron microscope images of scaffolds of different magnifications: (a) and (a′) Collagen, (b) and (b′) Collagen-rGO-200, (c) and (c′) Collagen-rGO-400, (d) and (d′) Collagen-rGO-600 and (e) and (e′) Collagen-rGO-800. Reprinted with permission from Ref. [374]. Copyright 2019 Elsevier.
