Figure 7.

Images from Randall’s plaques. (A) Tiny calcifications at the tip of the renal papilla. (B) Relatively large calcified plaques. (C) A cross section through the renal papilla, showing sub-epithelial calcifications running deep into the renal medulla (approximately 3 mm). Images of renal papillary tissue with (D) and without (E) visible plaque formations. and their SEM images (F) and (G), respectively. Black arrows show streaks of plaques in the tissue, white small arrows show the apatite spheres on the tissue. Bars in F and G are 10 μm.