Figure 4.

Mercury in pancreatic periductal cells. (A) The cytoplasm of one periductal cell abutting the epithelium of a small duct contains black mercury grains (inset, arrowhead). Some peripheral cells (arrow) of a nearby islet contain faintly-stained mercury. (B) Mercury is seen in scattered periductal cells adjacent to the epithelial cells of a large pancreatic duct (e.g., in the small dashed rectangle and lower left inset, arrowhead). Mercury is also seen in one cell (upper central inset, arrowhead) abutting a small duct. This is adjacent to an islet (arrow) which has peripheral and internal cells containing mercury. Autometallography/hematoxylin.