290179.fig.001a
(a)
290179.fig.001b
(b)
290179.fig.001c
(c)
290179.fig.001d
(d)
Figure 1: SEM images of the samples before coating with fibronectin. (a) and (b) Porous samples (acid treatment). (c) and (d) PorousNano samples (acid treatment followed by fluoride ion modification).