Fig. 1. Mechanical compression and hypoxia increase intracellular ROS production in human PDLFs. Human periodontal ligament fibroblasts (PDLFs) were exposed to mechanical compression (A) or hypoxic conditions (B) for 4 h, and intracellular reactive oxygen species (ROS) were measured using DCFH-DA, which is converted to fluorescence emitting DCF by ROS. *p < 0.05.
