Fig. 2From: Urethral reconstruction with autologous urine-derived stem cells seeded in three-dimensional porous small intestinal submucosa in a rabbit modelScanning electron microscopy, DNA content analysis, and proliferation assay. Electron micrographs of the mucosal (b and d) and serosal (a and c) sides of fresh SIS (a and b) and 5% PAA-treated SIS (c and d). A high level of porosity and large pore size were evident after treatment with 5% PAA. Scale bar = 60 μm. The DNA content analysis (e) showed a decrease in DNA content after treatment with 5% PAA. A significant difference in the DNA content was observed between the two groups (*P < 0.05). f Analysis of cell growth. The OD values in the scaffold groups were similar to those in the control group (P > 0.05). d days, OD optical density, PAA peracetic acid, SIS small intestinal submucosaBack to article page