| PAs | Pyrrolizidine alkaloids |
| HSOS | Hepatic sinusoidal obstruction syndrome |
| Im | Intermedine |
| ImNO | Intermedine N-oxide |
| La | Lycopsamine |
| LaNO | Lycopsamine N-oxide |
| Re | Retrorsine |
| ReNO | Retrorsine N-oxide |
| Sc | Senecionine |
| ScNO | Senecionine N-oxide |
| HepG2 | Human hepatocellular carcinoma |
| HepD | HepG2 cells that were cultured in 1.7% DMSO |
| H22 | Mouse hepatoma-22 cells |
| ROS | Reactive oxygen species |
| Cyt c | Cytochrome c |