Fig. 2From: The preconditioning of lithium promotes mesenchymal stem cell-based therapy for the degenerated intervertebral disc via upregulating cellular ROSPreconditioning using LiCl promotes ADSC proliferation. a Immunofluorescent staining of Ki67 after preconditioning, scale bar = 200 μm. b Quantitative analysis of Ki67 content. c Relative cell number of ADSC after preconditioning. d Two-day-post preconditioning. Error bars depict Mean ± SD. (****P < 0.0001, ***P < 0.001, **P < 0.01, *P < 0.05)Back to article page