Figure 7. A controlled volume of dH2O on the surface of a freeze-dried sample generates a characteristic B-line: deposition of a drop of water (A), ultrasound probe placed over the drop (B) and detection of the B-line (C).
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.