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.
Examples of different forms of nacre used in bone graft studies. (A) nacre powder (denoted with a ★) injected within sheep vertebrae; adapted from [413], with permission; (B) nacre in the form of a cylinder (N) implanted in sheep femoral epiphysis; adapted from [388] with permission; (C) trochlea shaped nacre in sheep femoral trochlea; adapted from [414] with permission; (D) screw shaped nacre implanted in sheep metatarsus; adapted from [415] with permission.
