Additional file 5: Figure S3. GFAP immunolabeling on glioblastoma (NG97) cells (with ROCK inhibition) 1, 12 and 48 h after treatments. This result shows that the cells keep the phenotype from astrocytes origin. In addition, this intermediate filament labeling confirms that the toxins (SF1, G-I and SF11, J-L) had no effects changing morphology, demonstrated also by actin filament labelling by phalloidin probe. Cells were rounder at the beginning, which become more stellate over time. Results of three independent experiments. Bars = 200 µm.