FIG. 5.

The pit formation of EGFP lentivirus-transduced human osteoclasts. Uninfected cells (control) were compared to the cells infected once (day 6) and infected twice (both days 6 and 7). EGFP-transduced cells were sorted at 10 days post-transduction. The pit formation assay was performed at 21 days posttransduction. The means and standard deviations were from three experiments.