ABTS	[2,2′-azino-bis(3-ethylbenzo-thiazoline-6-sulfonic acid diammonium salt)]
bmMSCs	bone marrow-derived mesenchymal stem cells
CG	(−)-catechin gallate
DMEM	Dulbecco’s modified Eagle’s medium
DPPH•	1,1-diphenyl-2-picryl-hydrazl
ET	electron transfer
ECG	(−)-epicatechin gallate
EGCG	(−)-epigallocatechin gallate
FBS	fetal bovine serum
FRAP	ferric reducing antioxidant power
GA	gallic acid
HAT	hydrogen atom transfer
LATT	lyophilized aqueous extract of Tibetan tea
PTIO•	2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide radical
ROS	reactive oxygen species
RAF	radical adduct formation
SD	standard deviation
TPTZ	2,4,6-tris(2-pyridyl-s-triazine)