Fig. 2
From: Cancer stem cell populations are resistant to 5-aminolevulinic acid-photodynamic therapy (5-ALA-PDT)
CD133 + stem cells are not sensitive to 5-ALA-PDT. (A) DLD-1, (B) H1299 and (C) Hs578T cells were treated with 5-ALA (5mM) (5-ALA-PDT) or with control vehicle (control) for 4 h and then irradiated for 3 min using a Theralase TLC 3000 A modular light source (27 J/cm2). At 24 h post-irradiation, Cell survival (dead cells (red) and live cells (green)) by Zombie Violet staining (colorimetric assay) and numbers of CD133 positive cells was measured by flow cytometry analysis. **p < 0.01 by one-way ANOVA with Tukey’s post-hoc test.
