However, the proportion of Ki67-positive cells decreased significantly in IRI-AKI rats treated with TSG-6-silenced BMSC compared to that in IRI-AKI rats treated with BMSC (29.7±0.8% versus 43.4±3.0%, P<0.05) (Figures 7(a) and 7(b)). Here, TNFAIP6 is linked to acute kidney injury.