Fig. 5

Cellular MRI before and after malignant transformation. The T2WI signal (a) and T2 value (b) were significantly decreased in the MTMSCs-PEG3-FTH1 compared with the MSCs-PEG3-FTH1 (***P<0.001), while no difference was found between the MTMSCs and MSCs or between the MTMSCs-CMV-FTH1 and MSCs-CMV-FTH1