Fig. 1. Platelet-rich plasma (PRP) preparation. PRP was isolated as a supernatant from centrifuged blood (A), frozen at −80℃ (B), and freeze-dried (C, D).
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.