AAEP	American Association of Equine Practitioners
AE1/AE3	Pan-cytokeratin
BM-MSC	Bone marrow mesenchymal stem cell
CD	Cluster differentiation
c-Kit	Proto-oncogene receptor tyrosine kinase or stem cell factor receptor
CM	Conditioned medium
cm2	Square centimeter
Coll-II	Collagen type II
COMP	Cartilage oligomeric matrix protein
CPD	Cumulative population doublings
DMSO	Dimethylsulphoxide
DPBS	Dulbecco′s phosphate buffered saline
eSM-MSC	Equine synovial membrane mesenchymal stem cell
FBS	Fetal bovine serum
FGF-2	Basic fibroblast growth factor
G-CSF	Granulocyte colony stimulating factor
GFAP	Glial fibrillary acidic protein
GM-CSF	Granulocyte macrophage colony-stimulating factor
GRO/KC	Human growth-regulated oncogene/keratinocyte chemoattractant
ICBAS-UP	Instituto de Ciências Biomédicas Abel Salazar–Universidade do Porto
IL	Interleukins
ISCT	International Society for Cellular Therapy
IV	Endovenous
kg	Kilogram
MCB	Master cell banks
MCP-1	Monocyte chemoattractant protein-1
mg	milligram
MHC-II	Major histocompatibility complex
MHz	Megahertz
min	Minutes
mL	Milliliter
MSCs	Mesenchymal stem cell
NSAIDs	Nonsteroidal anti-inflamatory drugs
OA	Osteoarthritis
OCT4	Octamer-binding transcription factor 4
ORBEA	Organismo Responsável pelo Bem-estar Animal
P	Passage
PBS	Phosphate-buffered saline
PRP	Platelet-rich plasma
RT-PCR	Reverse transcription polymerase chain reaction
SID	Once a day
SM-MSC	Synovial membrane mesenchymal stem cell
UDP	Uridine diphosphate
UDPGD	Uridine diphosphate glucose dehydrogenase
VEGF-R1	Vascular endothelial growth factor
WCB	Working cell banks