title: The linearity of reference standard values in the radial immunodiffusion assay of human C4 (beta1E globulin).
mesh_terms: D003181:Complement C4 / Q000032:analysis*; D003165:Complement System Proteins / Q000032:analysis*; D005069:Evaluation Studies as Topic; D006801:Humans; D005779:Immunodiffusion / Q000379:methods; D007073:Immunoglobulin E / Q000032:analysis*
chemical_list: D003181:Complement C4; D007073:Immunoglobulin E; D003165:Complement System Proteins