Fig. 1
The effect of hypoxic preconditioning on MSC migration. Hypoxic preconditioning (1% O2)-induced MSCs migration were tested by scratch healing and transwell migration assays (stained with crystal violet). a The effect of hypoxic preconditioning on MSC migration in scratch healing analysis at 6 h and 24 h (400-fold magnification). b Healing area/wounded area ratio in scratch healing analysis at 6 h and 24 h. c The effect of hypoxic preconditioning on MSC transwell migration capacity stained with crystal violet at 6 h and 24 h (400-fold magnification). d Cell counts of transwell migration at 6 h and 24 h. Results are mean ± SD (n = 3). *p < 0.05 vs. group normoxia