Fig. 4From: TNF-α, IL-1B and IL-6 affect the differentiation ability of dental pulp stem cellsAlcain blue staining of chondrogenic induced DPSCs. a Unstimulated. b Stimulated with TNF-α. c Stimulated with IL-1β. d Stimulated with IL-6. e Stimulated with TNF-α, IL-1β and IL-6Back to article page