- A physiologically based toxicokinetic model for dietary uptake of hydrophobic organic compounds by fish: I. Feeding studies with 2,2',5,5'-tetrachlorobiphenyl. Nichols, J.W., Fitzsimmons, P.N., Whiteman, F.W., Dawson, T.D., Babeu, L., Juenemann, J. Toxicol. Sci. (2004)