Figure 2
From: Photosensitization of a subcutaneous tumour by the natural anthraquinone parietin and blue light
PTN toxicity in vitro on LM2 cells and response to PTN-PDT. (A) The LM2 cells were incubated with increasing concentrations of PTN for 1 h and afterwards, the medium was changed, and the cell damage was left to occur for a further 19 h period, simulating the PDT schedule. Cell viability was evaluated by the MTT assay, as the percentage of cells exposed to the vehicle. (B) Cells were incubated for 1 h with PTN at 30 µM and illuminated with different doses of blue light. Cell viability was evaluated after 19 h and expressed as the percentage of the PTN-treated non-illuminated controls.
