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 photomicrographs of a commercial isoxyl (lot no. 130365–149120) at ×50 magnification, b commercial isoxyl (lot no. 130365–149120) at ×1,400 magnification, c commercial isoxyl (lot no. 165311–167669) at ×100 magnification, and the isoxyl particles from antisolvent precipitation by injection method: d VRSA = 1:1 at ×700 magnification, e VRSA = 1:2 at ×700 magnification, and f VRSA = 1:5 at ×15,000 magnification
