Figure 1 From: Lysosomal Enzyme-Induced Cell Death in MCF7 and Mammary Gland Cells. Histochemical Staining for Acid Phosphatase in MCF7 Cells. MCF7 cells were treated in the presence (lower left and right panels) or absence (upper left and right panels) of TNF-α. Control cells exhibit normal morphology for these cells and faint staining for acid phosphatase (AP). Experimental cells, however, display a shrunken cytoplasm and intense AP-positive staining. Magnification: upper left and lower left panels, 40X; upper right and lower right panels, 400X.Back to article page