Multicompartmental model for apoB transport in VLDL, IDL, and LDL (A), TG transport in VLDL (B), and either HDL apoA-I transport or plasma apoC-III transport (C). The models were developed as described in Methods. Data for [3H]glycerol in VLDL TG and for deuterated apoB in VLDL, IDL, and LDL were fitted simultaneously. Data for deuterated apoA-I in HDL and apoC-III in plasma were fitted separately.