Fig. 1From: Long-term administration of the fungus toxin, sterigmatocystin, induces intestinal metaplasia and increases the proliferative activity of PCNA, p53, and MDM2 in the gastric mucosa of aged Mongolian gerbilsLight microscopic views of the normal gastric mucosa of Mongolian gerbils. a Normal stomach tissue is smooth and without foci of inflammation in the gastric mucosa. b Findings in the luminal surface of the normal stomach body. The epithelium is well preserved and Alcian blue staining does not demonstrate acidic mucin. c Periodic acid Schiff’s (PAS) reaction is negligible. Characteristics of adenocarcinoma and mucus production are not confirmed. Stains: hematoxylin and eosin (H&E) staining (a), pH 2.5 Alcian blue staining (b), PAS staining (c). Group: non-treated control group (a–c)Back to article page