| Ahr | aryl hydrocarbon receptor |
| AO | adverse outcome |
| AOP | adverse outcome pathway |
| B[a]P | Benzo[a]pyrene |
| CYP | cytochrome P450 |
| DDT | dichlorodiphenyltrichloroethane |
| IARC | International Agency for Research on Cancer |
| KE | key event |
| KER | key event relationships |
| MIE | molecular initiating event |
| MWCNT | multi-walled carbon nanotube |
| NP | nanoparticle |
| OECD | Organisation for Economic Co-operation and Development |
| PAH | polycyclic aromatic hydrocarbon |
| WHO | World Health Organisation |