Figure 1. Outward electric currents exist at sites of lung tumors.

(A) Schematic figure of the xenograft model used in the current study. Full-thickness dermal specimens with the tumor was peeled off, placed into mouse ringer solution, following which, endogenous EFs around the tumor were detected using a vibrating probe. (B) Endogenous electric currents at tumor sites and normal uninvolved skin located nearby. The data are shown as mean ± S.E.M. ^*, p<0.01 as compared with the control group. Similar results were obtained in three independent experiments.