The use of material labelled with soft  -emitters in the Laurell immunoelectrophoretic technique.
D001798:Blood Proteins / Q000032:analysis; D002247:Carbon Isotopes; D006801:Humans; D007122:Immunoelectrophoresis; D007553:Isotope Labeling; D008722:Methods; D011863:Radioimmunoassay; D013975:Thyroxine-Binding Proteins / Q000097:blood*
D001798:Blood Proteins; D002247:Carbon Isotopes; D013975:Thyroxine-Binding Proteins