title: The interpretation of mean transit time measurements for multiphase tissue systems.
mesh_terms: D001692:Biological Transport; D001783:Blood Flow Velocity; D002463:Cell Membrane Permeability; D004058:Diffusion; D007202:Indicators and Reagents; D007700:Kinetics; D008433:Mathematics; D008954:Models, Biological; D011868:Radioisotopes; D012039:Regional Blood Flow; D013995:Time
chemical_list: D007202:Indicators and Reagents; D011868:Radioisotopes