Figure 7: Comparison of the cell proliferation on different roughness surfaces at different time points: (a-c) 3, 5 and 8 days on glass coverslips; (d-f) 3, 5 and 8 days on HA-P discs; and (g-i) 3, 5 and 8 days on HA-240 discs. Green fluorescence indicates live cells, while red fluorescence indicates dead cells. The scale bar represents 10 m.