title: Visualization of protein zones in preparative electrophoresis and carrier ampholyte zones on isoelectric focusing in gel slabs by two light refraction methods.
mesh_terms: D004591:Electrophoresis, Polyacrylamide Gel / Q000379:methods; D007525:Isoelectric Focusing / Q000379:methods; D008027:Light; D011506:Proteins / Q000302:isolation & purification*
chemical_list: D011506:Proteins