Figure 4
From: δ-Aminolevulinic acid cytotoxic effects on human hepatocarcinoma cell lines
DNA fragmentation analysis in human hepatocarcinoma cells undergoing ALA-induced apoptosis. HEP G2 (a) or HEP 3B (b) cells were treated with ALA (0; 1; 2 or 5 mM) and DNA fragmentation was examined 24 h later. HEP 3B cells were also treated with Etoposide (Eto, 5 μM), used as positive control.