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.
Bone hierarchical structure. The V, IV, and III levels construct the mechanical support structure for bone tissues, and the II and I levels construct the microenvironment for the bone tissue cells. These structures and components provide a biomimetic template for BTE scaffolds. HAP: hydroxyapatite; GAGs: glycosaminoglycans; NCPs: non-collagenous proteins. This Fig. is adapted from Refs. [[26], [27], [28], [29]].
