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.
Density of the cross-linked composite film, the columns represent the mean ± SEM of seven independent experiments: (a) PVA(2%), (b) PVA(2%)/collagen(2%), (c) PVA/collagen/B1(0.25%), (d) PVA/collagen/B1(0.5%), (e) PVA/collagen/B1(1%), (f) PVA/collagen/B1(2%), and (g) PVA/collagen/B1(4%).
