962026.fig.007a
(a)
962026.fig.007b
(b)
962026.fig.007c
(c)
962026.fig.007d
(d)
962026.fig.007e
(e)
962026.fig.007f
(f)
Figure 7: Optical images of cell spreading on polymer-assisted HA nanostructures with PAM concentrations of 2, 3, and 4 g/L and hydrothermal reaction times of 6 hr (a, c, and e) and 12 hr (b, d, and f).