Fig. 1From: The establishment of a chemically defined serum-free culture system for human dental pulp stem cellsCell morphology. a Images of primary culture for 14 d and 28 d. b-d Differences in cell morphology after culture in E8 (left) and serum-containing medium (right; SCM; DMEM + 5% FBS) for b 24 h, c 48 h, and d 96 hBack to article page