Fig. 7
a Representative photo images of collected tumor tissues of DMBA-induced breast cancer rats from the untreated group, dark control group ( administered 5 mg/kg Ce6 with no irradiation), free Ce6-PDT group (administered 5 mg/kg of free Ce6 followed by 180 J/cm2 irradiation using 665 nm) and MSN-Ce6-PDT group (administered dose equivalent to 5 mg/kg of Ce6 followed by 180 J/cm2 irradiation using 665 nm) bar 9 mm. b Average tumor volume. c Average tumor weight. d Histopathological images of hematoxylin and eosin stained non-lactating mammary gland tissues collected from the aforementioned treatment groups. Blue arrows marked the lumen of the duct filled with atypical proliferative cells and red arrows marked the malignant epithelial cells invading the stroma forming small ductal structures (upper row X:100 bar 100 µm, lower row X: 400 bar 50 µm)