Figure 2. Graphic representation of comparison of different variables between and among groups. N = 3 in each subgroup. (A) The mean and standard deviation of the QBD normalized (percentage of the QBD of the distraction site to that of normal bone) for all groups over the four-week period. (B) Mean ± standard deviation of the mechanical stiffness for all groups over the four-week period. (C) The mean ± standard deviation of the percentage of the bone volume/tissue volume % (BV/ TV) representing the amount of bone formation for all groups over the four-week period.