626452.fig.004
Figure 4: Initial cell adhesion of MC3T3-E1 osteoblast-like cells to HAP, HAP—30% PA, and HAP—30% PA—12 h at 0.5 and 24 hours. At 0.5 hours, the number of cells adherent to HAP—30% PA—12 h was significantly greater than that for HAP ( ). At 24 hours, the number of cells adherent to HAP—30% PA—12 h was significantly greater than those for both HAP ( ) and HAP—30% PA ( ).