Representative images showing the effect of AREG, EGFR inhibitor (AG1478), and YAP antagonist verteporfin (VTPF) on the growth of ME180 cell in a 3D hanging-drop culture system. ME180 cells were incubated in the 3D hanging-drop culture system for 10 days in the absence or presence of AREG, AG1478 or verteporfin for 8 days. Scale bar: 1.0 mm. 