Fig 3. Persistence of the contractile ring during THz irradiation.

Live-cell imaging of cells with a contractile ring. The cellular actin filaments were stained with SiR-actin and observed 30 minutes after generation of the contractile ring. The culture medium was kept at 37 °C by the heating stage during the experiments with and without THz irradiation. To observe the thermal effects on cytokinesis progression, cells were cultured at 42 °C and observed (bottom panel). The red arrows show the contractile ring and the white arrows show the daughter cells. The white bar shows a scale of 20 μm.