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.
Scanning electron microscopy images of specimen surfaces immediately after preparation and after 28 days of storage at 37 °C in phosphate-buffered saline (PBS) for the control (a,b), micro-BG (c,d), nano-BG (e,f), hybrid-BG (g,h), and micro-inert composites (i,j). Insets show higher magnification of crystals formed on specimen surfaces.
