Figure 3.
Ishikawa diagram of developing a system for in vitro penetration measurements of nasal powders, the most influencing factors are highlighted in red.
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.