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.
In situ cross-linking in 3D bioprinting. (a) Thermal cross-linking; (b) cross-linking based on atomized agent spraying; (c) the use of a cross-linking medium; and (d) photopolymerization either after bioink deposition or via a light-permeable needle before extruding out.
