title: Estrogen receptor assay: interlaboratory and intralaboratory variations in the measurement of receptors using dextran-coated charcoal technique: a study sponsored by E.C.O.G.
mesh_terms: D001943:Breast Neoplasms / Q000032:analysis*; D002606:Charcoal; D003600:Cytosol / Q000032:analysis; D003911:Dextrans; D005260:Female; D006801:Humans; D008722:Methods; D011786:Quality Control; D011960:Receptors, Estrogen / Q000032:analysis*
chemical_list: D003911:Dextrans; D011960:Receptors, Estrogen; D002606:Charcoal