Fig. 3
The ratios Ri represent the fractions of TiO22NP present in liver, spleen, kidneys and carcass (without organs) and the integral sum of all absorbed fractions determined after IT-instillation that have been absorbed through the GIT relative to the sum of gut-absorbed and ABB-translocated TiO2NP after 1, 7 and 28 days. Mean ± SEM of n=4 rats at each time point.