Fig. 2.

Proliferation rates of MSCs cultured under hypoxia or normoxia for 2 weeks. a Schematic drawing of MSC culture under different oxygen tensions. BM-MSCs derived from five different donors were cultured and maintained under hypoxia or normoxia for 2 weeks. b The number of cell divisions of MSCs cultured under hypoxia or normoxia for 2 weeks. The number of cell divisions was calculated with respect to cell number. *P < 0.05