Fig. 7. Relative uptake of the photosensitizers depending on the time. The relative amount of substance was examined for the lowest concentration of photosensitizer (c(TPPS₄) = 5 × 10⁻⁶ M, c(TMPyP) = 1 × 10⁻⁵ M, c(eosin y) = 5 × 10⁻⁵ M and c(methylene blue) = 1 × 10⁻⁴ M).