Fig. 8
a Microscopic images of immunostained breast sections against caspase 3 counterstained with Mayer's hematoxylin showing positively stained infiltrating tumor cells (black arrows) around affected lactating duct. b Microscopic images of immunostained breast sections against Bax counterstained with Mayer's hematoxylin showing positively stained infiltrating tumor cells (black arrows) around the affected lactating duct. The dark control group was DMBA-induced breast cancer rats administered 5 mg/kg Ce6 with no irradiation, the free Ce6-PDT group was DMBA-induced breast cancer rats administered 5 mg/kg of free Ce6 followed by 180 J/cm2 irradiation using 665 nm and MSN-Ce6-PDT group was DMBA-induced breast cancer rats administered dose equivalent to 5 mg/kg of Ce6 followed by 180 J/cm2 irradiation using 665 nm (X: 400 bar 50 µm)