title: The subunit composition and sedimentation properties of human C1.
mesh_terms: D002499:Centrifugation, Density Gradient; D003172:Complement C1 / Q000032:analysis* / Q000138:chemical synthesis; D003165:Complement System Proteins / Q000032:analysis*; D006801:Humans; D005779:Immunodiffusion
chemical_list: D003172:Complement C1; D003165:Complement System Proteins