PDGFA and chronic kidney disease: Just as CKD-RK-MSC, CKDsev-AD-MSC expressed significantly more PDGF-A and PDGF-C than H-MSC (CKDsev-AD-MSC (n = 8) vs. H-MSC (n = 9): p = 0.008 and p = 0.005, Figure 5A) and contained significantly higher amounts of active SA-β-gal (Figure 5B).