Figure 2

Immunohistochemical localization of MDR1/P-glycoprotein (red). (a) With antibody C219 in breast cancer (showing cytoplasmic and membrane localizations in cancer cells) and healthy human liver (inset) (hematoxylin, ×400). (b) With antibody JSB-1 in breast cancer (showing cytoplasmic and membrane localizations in cancer cells) and healthy human liver (inset) (hematoxylin, ×400).