Figure 3From: Antineoplastic effect of iodine in mammary cancer: participation of 6-iodolactone (6-IL) and peroxisome proliferator-activated receptors (PPAR)Apoptotic rate. Representative sections of TUNEL-positive cells in tumors from control (A) or I2-treated rats (B), magnification 20×. C, Section of rat tumor treated with I2 that shows an extensive zone of TUNEL-positive cells (white arrows), magnification 10×. TUNEL-positive cells were revealed with diaminobenzidine (brown stain) and counterstained with hematoxylin (purple stain). D, TUNEL-positive cell quantification. The difference between experimental groups was analyzed using an unpaired t test. *indicates significant difference from the control (p < 0.05)Back to article page