Fig. 4From: Development of a miniaturized stimulation device for electrical stimulation of cellsChange in endothelial cell morphology as the result of DC stimulation. a Elongation of HUVECs before and after 12 h stimulation with 1.5 mA DC current, and b Plot of the ratio of long axis : short axis , as calculated from 10 cells using ImageJ. Scale bar = 50 μmBack to article page