Fig. 5

Intracellular production of 8-oxoG in A549 cells treated with 4-nitroquinoline 1-oxide (4NQO). A549 cells were incubated with (a) 4NQO (1 μM), (b) 4NQO (1 μM) and Cu(II) (1.25 mM), and stained using an OxyDNA Test (Argutus Medical Ltd., Dublin, Ireland). Each slide was scanned at a magnification of 200× using a fluorescence microscope