Figure 3

Proliferation assay using Oct4/Sox2-ATMSCs. (a) WST-1 assay showed that Oct4/Sox2-ATMSCs have higher cell metabolic activity than RFP-ATMSCs at 1, 2 and 3 days. (b) In the trypan blue exclusion assay, viable cell numbers were increased significantly in Oct4/Sox2-ATMSCs cultured for 9 days compared with RFP-ATMSCs. Data are expressed as the mean±s.d. **P<0.01 compared with the corresponding control value as determined by Student’s t-test.