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.
Photomicrographs (450× magnification) of unsonicated carvedilol-containing niosomes prepared by the film hydration method. The niosomes were composed of (a) Span, Tween 40 / CHOL(7:3), (b) Span, Tween 60 / CHOL(5:5), (c) Span, Tween 60 / CHOL(7:3), and (d) Span, Tween 20 / CHOL(6:4)
