CD	cluster of differentiation
CFSE	carboxyfluorescein succinimidyl ester
Ct	cycle threshold
ELISA	enzyme-linked immunosorbent assay
FCS	fetal calf serum
GF	gingival fibroblast
HPRT	hypoxanthine phosphoribosyltransferase
IL-1β	interleukin 1 beta
LPS	lipopolysaccharide
PBL	peripheral blood lymphocyte
PBMC	peripheral blood mononuclear cell
Pg	Porphyromonas gingivalis
TLR	toll-like receptor
TNF-α	tumor necrosis alpha