Figure 4.

Wavelength-dependent photoactivity of Re complexes 1-4 in HeLa cells. Complexes (1 μm) were incubated for 1 h before irradiation (15 min for λ ≥ 330 nm, 60 min for λ ≥ 415 nm and λ ≥ 505 nm) and 24 h after compound administration cell survival was determined by the MTT assay. The presented data are based on the average of 18 measurements.