Fig. 5From: Physiological cyclic hydrostatic pressure induces osteogenic lineage commitment of human bone marrow stem cells: a systematic studyATP release over time during long-term intermittent pressure stimulation. The effects of intermittent pressure on ATP release at days 3, 5, 7 and 9 after 1 h of mechanical stimulation. n = 4–6. *p < 0.05 compared to either S; &p < 0.05 for effect of pressure magnitude effectBack to article page