HD	Human deciduous teeth
DPCs	Dental pulp cells
HDDPCs	Human deciduous teeth-derived dental pulp cells
SV40	Simian virus 40
HPV16	Human papilloma virus 16
SV40 TAg	SV40 large T antigen
HPV16-E7	E7 oncoprotein of HPV16
hTR	Human telomerase RNA
hTERT	Human telomerase reverse transcriptase
hTEP1	Human telomerase-associated protein 1
DPSCs	Dental pulp stem cells
PB	piggyBac
CAG	Chicken β-actin gene-based promoter
pac	Puromycin acetyltransferase gene
PGK	Phoshoglycerate kinase
tdTomato	Tandem dimer Tomato
EGFP	Enhanced green fluorescent protein
GEU	Gene expression unit
ALP	Alkaline phosphatase
PBS	Dulbecco’s modified Ca2+, Mg2+-free phosphate-buffered saline
iPS	Induced pluripotent stem
OCT-3/4	Octamer-binding transcription factor-3/4
SOX2	Sex determining region Y-box 2
DSPP	Dentin sialophosphoprotein
IP	Intraperitoneal
DMEM	Dulbecco’s modified Eagle’s medium
FBS	Fetal bovine serum
PFA	Paraformaldehyde
RT	Room temperature
PBS	Dulbecco’s modified Ca2+, Mg2+-free phosphate-buffered saline
GAPDH	Glyceraldehyde-3-phosphate dehydrogenase
NGS	Normal goat serum
DAPI	4′,6-diamidino-2-phenylindole