Fig. 7.

Oxidative DNA damage after UV and intense white light exposure. DNA damage is visualized as dark color using anti-8-hydroxyguanosine and DAB/HRP enzymatic reaction. a Negative control (without primary antibodies). b Positive control (heads incubated with cytotoxic etoposide). c Control flies fed with glucose, not exposed to light. d Flies fed with glucose, exposed to light. e Flies fed with HO inhibitor (SNPPIX) and exposed to light. f Flies fed with HO activator (hemin) and exposed to light