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.
Sildenafil induced ROS accumulation in human colorectal cancer cells. SW480 and HCT116 cells were treated with sildenafil at the indicated concentrations and time-points, stained with DHE and photographed under microscope. The representative micrographs (A) and quantified results (B) of three independent experiments were shown. *P < 0.05 and **P < 0.01 versus corresponding control.
