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.
Surface morphology of 50/50 alginate/HAP composite scaffolds (3% alginate, crosslinker: 0.03 M CaCl2, freezing temperature: −40 °C) at (A) bottom, (B) top, and (C) midsections of scaffolds. Magnification at 100 × . Adapted with permission from [180]. Copyright (2004), John Wiley and Sons.
