Susceptibility of In Vitro Melanoma Skin Cancer to Photoactivated Hypericin versus Aluminium(III) Phthalocyanine Chloride Tetrasulphonate

Figure 5

Trypan blue viability assay to assess the effect of Hyp-PDT versus AlPcS₄Cl-PDT when cells were treated with Hyp or AlPcS₄Cl for 24 hrs followed by laser irradiation at wavelengths 594 and 682 nm, respectively. Untreated A375 (cell + 0 PS, 0 LI) were compared with those treated with 2.5 μM PS, 5 J/cm² and those treated with 2.5 μM PS + 1, 2.5, 5, and 10 J/cm².