The cellular viability and proliferation of L929 on scaffolds. (a) Scheme of L929 cells seeded and cultured on scaffolds. Live/dead staining fluorescence images of L929 cells on HDPE (b–d), pDA (e–g), and pDA-EFE (h–j) scaffolds after culturing for 1, 3, and 5 days. (k) Relative cell viability percentages of L929 cells on scaffolds after culturing for 3 days, which were evaluated by live/dead assay. (l) The proliferation analysis of L929 cells on scaffolds based on fluorescence intensity analysis via alamarBlue viability reagent. (P < 0.05, n = 3).