Fig. 4.
Whole process of in situ 3D bio-printing. (A) Flow chart of the in vivo study. (B) General view of the robotic manipulator-based 3D printer. (C) The process of in situ printing. (D) Printed scaffold, with a porous structure.
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.