“…Currently, large research projects focus on establishing alternative methods for skin toxicity (Natsch and Emter 2015;Golka 2015;Jaworska et al 2015;Sonnenburg et al 2015), nephrotoxicity (Jennings et al 2015;Aschauer et al 2015a, b;Vedula et al 2017;Choi et al 2016;Leclerc et al 2016;Carneiro et al 2015), hepatotoxicity (Hammad et al 2016;Aranda 2015, 2016;Deharde et al 2016;Gómez-Lechón and Tolosa 2016;Grinberg et al 2014) and toxicity of further organs and cell types. A strength of systematically established AOPs is that they can clearly indicate which specific key event or even molecular initiating event is detected by a certain readout of an in vitro system.…”