Figure 5b. (a, b) Photomicrographs (original magnification, x200) of the same sections of liver adenocarcinoma stained with H-E (a) and NADH vital histochemical (b) stains show complete microwave thermocoagulation of all areas except a small group of cells at the top left-hand corner (arrow in b). This effect is seen more clearly on the NADH-stained section. (c, d) Photomicrographs (original magnification, x100) of sections from normal liver parenchyma, obtained for comparison after microwave ablation and stained with H-E (c) and NADH (d), show complete thermocoagulation on the left half of the slide but viable tissue on the right. The dark-blue area (viable cells) on the right is more evident on the NADH-stained slide (d).