Figure 1.

An illustration of the system of therapeutic ultrasound (TUS) stimulation of the cells in culture (A) and the experimental protocol (B). (A) Ultrasound was applied from a circular ultrasound transducer for the cells in culture through the base of the culture plate. An ultrasound gel pad was laid between the plate and the transducer. (B) Three sessions of TUS were carried out on the cells in culture and then HUVECs were collected on day 4. The collected HUVECs were used for in vitro experiments.