PTHrP	Parathyroid Hormone related Protein
PTH	Parathyroid Hormone
PPR	Parathyroid Hormone related Protein Receptor
Ihh	Indian hedgehog
Shh	Sonic Hedgehog
Dhh	Desert Hedgehog
MSC	Mesenchymal Stem Cell
FGF	Fibroblast Growth Factor
FGFR	Fibroblast Growth Factor Receptor
IGF1	Insulin-like Growth Factor 1
IGF1R	Insulin-like Growth Factor 1-Receptor
GH	Growth Hormone
BMP	Bone Morphogenetic Protein
TGFβ	Transforming Growth Factor-β
Runx2	Runt-related Transcription Factor 2
Sox9	SRY-Box 9
Cxcl12	Stromal cell-derived Factor 1
Col2a1	Type II Collagen
Col11a2	Type XI Collagen
ColX	Type X Collagen
Osx	Osterix
Opn	Osteopontin
Mmp13	Matrix metalloproteinase 13
SOST	Sclerostin
Foxc1	Forkhead Box C1
PKA	Protein Kinase-A
ΒCatenin	Beta-Catenin
Lef1	Lymphoid Enhancer Binding Factor 1
Smo	Smoothened
cAMP	Cyclic AMP
Alpl	Alkaline Phosphatase
Lrp5	Lipoprotein-related receptor protein 5
DNA	Deoxyribonucleic Acid
RNA	Ribonucleic Acid
POC	Primary Ossification Center
SOC	Secondary Ossification Center