Response to Letter to the Editor from Drs. van Kesteren, Pronk, Heusinkveld, Luijten and Hakkert concerning Yamada et al. (2021): Critical evaluation of the human relevance of the mode of action for rodent liver tumor formation by activators of the constitutive androstane receptor (CAR). Crit. Rev. Toxicol. Vol. 51: 373-394