Observed and PBPK model-simulated docetaxel concentrations in mouse lung, kidney, heart, liver, intestine, plasma and brain and model-predicted intestinal and hepatic metabolism following an intravenous dose of 3 mg/kg. Black diamonds represent the observed data from FVB mice. White diamonds represent the observed data from Mdr1a/b knockout (KO) mice. For all observed data, error bars symbolize SD. Solid lines and dashed lines indicate PBPK model predictions for FVB and KO mice, respectively