Figure 4 : Receptor activator of nuclear factor-kappa B ligand (RANKL) protein expression induced by Escherichia coli
lipopolysaccharide, Porphyromonas gingivalis lipopolysaccharide and interleukin-1 beta inperiodontal ligament cells (A)
and osteoblastic cells (B).

Bars indicate mean and standard deviation of densitometric analysis of three independent experiments. Data are expressed as
fold change in unstimulated control group after normalization to GAPDH. In all graphs asterisk (*) indicates significant difference
(p<0.05) in relation to ‘1’ attributed to unstimulated control by one-sample t test. Exclamation mark (!) indicates significant
difference (p<0.05) within the same dose comparing 24h and 48h stimulation with the same agonist by unpaired t test. E. coli,
Escherichia coli ; P. gingivalis, Porphyromonas gingivalis ; IL-1β, interleukin-1 beta; GAPDH, glyceraldehyde-3-phosphate
dehydrogenase.

GuimarĂ£es et al.Immunology Innovation  2014 2:1DOI : 10.7243/2053-213X-2-1