BMP	Bone morphogenetic protein
BSA	Bovine serum albumin
Col	Collagen
COMP	Cartilage oligomeric matrix protein
DAPI	4′,6-diamidino-2-phenylindole
DMEM	Dulbecco’s Modified Eagle’s Medium
EBNA	Epstein-Barr virus nuclear antigen
ECM	Extracellular matrix
EDTA	Ethylenediaminetetraacetic acid
Erk	Extracellular-signal regulated kinases
EtOH	Ethanol
F	Fraction
FACIT	Fibril-associated collagens with interrupted triple helices
FBS	Fetal bovine serum
G	Grade
GAPDH	Glycerinaldehyd-3-phosphat-dehydrogenase
HC	Healthy control
HEK cells	Human embryonic kidney cells
HRP	Horseradish peroxidase
IB	Immunoblot
IF	Immunofluorescence
IHC	Immunohistochemistry
ka	Association rate
kd	Dissociation rate
kD	Dissociation constant
kDa	Kilo Dalton
LC	Loading control
OA	Osteoarthritis
PBS	Phosphate-buffered saline
PDGF	Platelet-derived growth factor
Pen/strep	Penicillin/streptomycin
PET	Polyethylene terephthalate
PG	Proteoglycan
PVDF	Polyvinylidene fluoride
Rec	Recombinant
rpm	Revolutions per minute
RT	Room temperature
RU	Response Units
SDS-PAGE	Sodium dodecyl sulfate polyacrylamide gel electrophoresis
Smad	Small mothers against decapentaplegic homologs
TGF-β1	Transforming growth factor-beta 1
TSP-4	Thrombospondin-4