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.
Schematic view of periodontitis pathogenesis (IL-1 = interleukin-1, TNF-α = tumor necrosis factor α, RANKL = receptor activator of nuclear factor kappa-Β ligand, OPG = osteoprotegerin, MMPs = metalloproteinases) [pictures belong to one of authors (AR) periodontitis database].
