A summary of the potential forms of Cd present in the small and large intestines, liver, biliary tree, and kidneys after oral or pulmonary exposure to
cadmium salts or Cd-protein complexes. This figure provides a schematic presentation of the potential pathways involved in the handling and excretion of
the different forms of Cd that may be present in the relevant compartments of the body. MT, metallothionein; Cys, cysteine; GSH, glutathione