Figure 5.
Markers of distinct anatomical locations within the human breast in situ. Immunoperoxidase staining of ducts (left) and lobules (right) in cryostat sections of the human breast with keratin 6a (a and b), BCA-225 (c and d), keratin K17 (e and f), and WT1 (g and h). Each marker exhibits a restricted, albeit for BCA-225 and WT1 somewhat biopsy-dependent, location (brown) in either the luminal or myoepithelial cells of the ducts or lobules, respectively. Nuclei are counterstained with hematoxylin (blue). Bar, 50 μm.