Fig. 9
From: Chronic effects of two rutile TiO2 nanomaterials in human intestinal and hepatic cell lines
Histogram comparisons of ion yields for characteristic biomarker ions which were used to separate the four treatment groups in HepaRG cells (unexposed control cells (2 weeks), cells exposed to TiO2 NMs for 1 week, 2 weeks and for 1 week with a one-week washout period. Representative biomarker ions for HepaRG cells treated with NM-103 (a, c) and NM-104 (b, d) are presented. For the relative intensity, the mean of the control group exposed for 2 weeks was taken as 100% in all cases