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.
Schematic illustration of 4D bioprinting technologies. (a) Micro extrusion-based bioprinting using pneumatic, piston, or screw dispensing systems. (b) Inkjet bioprinting using thermal, piezoelectric, or electrostatic ejecting systems. (c) Stereolithography. (d) Digital light processing. (e) Laser-assisted bioprinting.
