ALP	alkaline phosphatase
ANOVA	analysis of variance
BMP	bone morphogenetic protein
BMP-2	bone morphogenetic protein 2
Ct	cycle threshold
GAPDH	glyceraldehyde-3-phosphate-dehydrogenase
GFP	green fluorescent protein
hAMSCs	human amnion mesenchymal stem cells
MSCs	mesenchymal stem cells
MTS	3-(4,5-Dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium
nHAC/PLA	nano-hydroxyapatite/collagen/poly(l-lactide)
OB	osteoblast
OC	osteoclast
OCN	osteocalcin
OD	optical density
PBS	phosphate buffered saline
rhBMP-2	recombinant human BMP-2
RT-qPCR	Reverse transcription quantitative real-time polymerase chain reaction
SD	standard deviation
SDS/PAGE	sodium dodecyl sulphate polyacrylamide gel electrophoresis
TGF-β	transforming growth factor-β