FIG. 2.

Histograms of ECM fiber height from regions shown in Figure 1. The average fiber height of the mineralizing subclone (A) was 1 (day 1), 1.6 (day 7), and 2.3 μm (day 14). The average fiber height of the nonmineralizing subclone (B) was 1 (day 1), 1.6 (day 7), and 2.7 μm (day 14). On days 21 and 28, the ECM fibers were occluded by the cells (data not shown).