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.
Forest plots for the association of the MMP-2 -753C>T and MMP-9 -1562C>T polymorphisms with periodontitis risk. A: MMP-9 -1562C>T (allele model: T vs. C), B: MMP-9 -1562C>T (CP, homozygote model: TT vs. CC), and C: MMP-2 -753C>T (dominant model: TT+TC vs. CC)
