Higher magnification micrographs of the treatment in Fig 7.

(A) and (B) Midway between the anode and cathode. (C) and (D) Midway between anode and cathode towards the cathode (x10). (E) The core of the ablated region near the cathode in 10x magnification with H&E (F) and Mason trichromatic stain. The core of the ablated region near the cathode with 20x magnification and H&E staining (G) and with Mason trichromatic stain (H). (I) and (J) Micrographs at the outer margin of the cathodic lesion: (I) 10x magnification and trichromatic stain, (J) 20x magnification and H&E stain.