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. 2020 Nov 24;8:581972. doi: 10.3389/fcell.2020.581972

FIGURE 4.

FIGURE 4

Total protein and human growth factor analysis of soluble decellularized extracellular matrix (ECM) preparations. (A) SDS-PAGE analysis of each urea-extracted tissue. (B) Growth factor concentrations (pg/ml) in 500 μg/ml soluble ECM preparations. n = 3 per condition. *p < 0.05, **p < 0.01, significant difference from each preparation. §§ p < 0.01, significant difference from any other preparations. bFGF, basic fibroblast growth factor; IGF-1, insulin-like growth factor-1; VEGF, vascular endothelial growth factor; TGF-β1, transforming growth factor-β1.