Significantly higher number of viable cells were observed on PU scaffolds coated with FN or COL in comparison to the uncoated scaffolds, similar to the HMEC and PS-1 mono-cultures (Figure 2; section “Long-Term Monoculture of Stellate Cells and Endothelial Cells on PU Scaffolds”), as well as in comparison to our previously published work for cancer cells (PANC-1) mono-culture (Totti et al., 2018). The gene discussed is PRB2; the disease is cancer.