Strikingly, absolute counts showed that the number of proliferating cells (mVenus+ and mCherry+mVenus+) in Pax8/FUCCI2aR and in Pax2/FUCCI2aR mice was  virtually identical at all time points analysed (Fig. 7n), demonstrating that only Pax2+ cells divide after AKI. This evidence concerns the gene PAX2 and acute kidney injury.