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.
The concentration of MMP-1 and TGF-β1 in conditioned media at day 0, day 7 and day 21 of the co-culture model, as determined by ELISA. Error bars represent the standard error of the mean. Significant differences are indicated by vertical black bars.
