Representative immunostaining to examine cell viability after seeded on PC (PC-D2) prepared from DTMPC (0.33 mmol) by 1.7 μmol DBU and 35 μmol 1,3PDO at 130°C. (A) and (B) for day 1, (C) and (D) for day 4, (E) and (F) for day 7. (A), (C) and (E) for live cells, and (B), (D) and (F) for dead cells are showed. (G) Cells seeded on all 3 PCs have more than 75% and 65% cell viability after 3 days and 7 days’ post seeding, respectively. Scale bar = 200 μm.