Fig. 6
Kinetic curves showing HUVEC migration following photodynamic therapy (PDT) with (a) ZnPc1 and (b) ZnPc2 were assessed using the xCELLigence RTCA-DP system. VEGF-containing media served as a chemoattractant in the lower chamber. Impedance measurements were recorded every 15 min over a 24-h period. Results are expressed as the mean ± SD. PDT light dose: 20 joules.cm−2; Pc concentration range: 1–10 µM. Color codes indicated the concentrations of the molecules: cyan (with VEGF), and slate blue (w/o VEGF), dark blue (1 µM w/o PDT), magenta (10 µM w/o PDT), green (1 µM with PDT), red (10 µM with PDT).
