Figure 1.

Caveolin-1 expression in normal human breast tissue. Normal breast tissue samples were immunostained with rabbit polyclonal (A–C) or mouse monoclonal (D–F) antibodies directed against caveolin-1 (A, C, D, F) or a non-specific protein (isotype) (B and E). Caveolin-1 expression in the stromal tissue surrounding the ductal epithelium and especially in the myoepithelial layer underlining the ducts is clearly visible in panels A and D. Specific reactivity against caveolin-1 in adipose tissue (arrowheads) and vascular endothelial cells (arrows) is shown in panels C and F. Scale bar = 50 μm.