Fig. 1.

Monoamine oxidase A (MAO-A) expression in normal prostate tissues. (A) and (E) Prostate glands stained with hematoxylin and eosin display basal (outer layer) and secretory (inner layer) epithelial cells. (B) and (F) Intense staining of MAO-A is observed in basal cells. (C) Strong cytokeratin 18 staining is present in the secretory cells. (D) Merged image of (B) and (C). (G) Robust staining of p63 decorates the nuclei of basal cells. (H) Merged image of (F) and (G). MAO-A and p63 signals do not overlap in the basal cells, showing cytoplasmic localization of MAO-A. The magnification for (A–H) is × 200. For all images, the size bar is 100 µM.