Fig. 2 SEM images of HA surface topography without cells A-F and with MG-63 cells on HA surface a1-f1,a2-f2. Arrows: Cells. A, a1 HA-R50, B, b1, HA-R200, C, c1 HA-R500, D, d1 HA-IR, E, e1 HA-MIR and F, f1 HA-S a2, b2, c2, d2, e2 and f2 are the higher magni#cod#x0fb01;cation images of a1, b1, c1, d1, e1 and f1, respectively |