Figure 1From: Effects of high frequency loading on RANKL and OPG mRNA expression in ST-2 murine stromal cells RANKL, OPG, and RANKL/OPG mRNA levels in ST-2 murine stromal cells after 3600 cycles of OFF. Loading frequencies of 1, 10, or 20 Hz were used. This resulted in loading durations of 60 min (1 Hz), 6 min (10 Hz), and 3 min (20 Hz). N = 4 for each group.Back to article page