Figure 1.
Scanning electron micrographs of the powder formulations. All micrographs were taken at the same magnification of 3 kX. The scale bar at the bottom of each micrograph represents a length of 5 μm.
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.