title: Separation of histones from contaminating ribosomal proteins by two-dimensional gel electrophoresis.
mesh_terms: D000818:Animals; D004586:Electrophoresis / Q000379:methods; D006657:Histones / Q000302:isolation & purification*; D011092:Polyethylene Glycols; D012269:Ribosomal Proteins / Q000032:analysis*; D012617:Sea Urchins; D014508:Urea
chemical_list: D006657:Histones; D012269:Ribosomal Proteins; D011092:Polyethylene Glycols; D014508:Urea