Figure 1From: Co-expression of estrogen receptor-alpha and targets of estrogen receptor action in proliferating monkey mammary epithelial cellsCo-localization of estrogen receptor (ER)α and Ki67 in primate mammary epithelial cells. (a) ERα and (b) Ki67 immunostaining (brown) are detected in the same epithelial cells on serial sections (3 μm) of primate mammary tissue, for example, cells 4–7. Bar = 20 μm.Back to article page