Fig. 6From: The preconditioning of lithium promotes mesenchymal stem cell-based therapy for the degenerated intervertebral disc via upregulating cellular ROSLiCl-preconditioned ADSC exhibited NP-regenerative effects. a H&E staining, b S-O staining, and IHC staining of c Col II and d aggrecan of IVD tissue at 3 months after treatment. e The sGAG content normalized to dry NP weight. f Hydroxyproline content normalized to dry NP weight. Error bars depict Mean ± SD. **P < 0.001, *P < 0.05, compared to Normal control; ##P < 0.01, #P < 0.05, compared to LiCl-preconditioned ADSC (L-ADSC)Back to article page