“…It is known from bile collection studies (Cantarow et al 1948) and from experiments with Sa6-labelled bromsulfalein (Brauer et al 1955) that the major part of the dye is eliminated by the liver and excreted in the bile. Bromsulfalein is plasmaprotein-bound, when introduced into the blood, at concentrations such as are commonly used probably exclusively to serum albumin (Bradley et al 1945, Pezold 1953, Cohen et al 1956. Thus the general model should contain two connected volumes, representing the plasma volume and the liver, with an outlet of the latter representing biliary elimination.…”