Fig. 2.
a ROS generation by ZnO–MTAP conjugates in the presence or absence of UV-A light. b OVCAR-3 cell viability (20 h later) exposed to ZnO–MTAP conjugates (1 or 10 μM) under dark or UV-A conditions (0 or 9 kJ/cm2 after 4-h exposure)
[Taken from reference (Zhang et al. 2008)]