A: Dorsum of tongue, Malpighian layer. Silver Nitrate staining for AgNOR bodies within the nucleus (arrow). 400×. Olein supplemented diet. B: Dorsum of tongue, Malpighian layer. Fish oil enriched diet. Fewer AgNOR particles are observed (arrow). C: Malpighian layer of lip. 400×. H-E. Several mitosis are shown. Olein supplemented diet. D: Squamous epithelium of the dorsal aspect of tongue with one apoptotic figure (arrow). 400×. H-E. Corn oil supplemented diet.