title: A simple microtechnique for isoelectric focusing on a density gradient.
mesh_terms: D000118:Acetylglucosaminidase / Q000302:isolation & purification; D002021:Buffers; D005696:Galactosidases / Q000302:isolation & purification; D006026:Glycoside Hydrolases / Q000302:isolation & purification*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D007525:Isoelectric Focusing / Q000295:instrumentation / Q000379:methods*; D008099:Liver / Q000201:enzymology*; D008361:Mannosidases / Q000302:isolation & purification
chemical_list: D002021:Buffers; D005696:Galactosidases; D006026:Glycoside Hydrolases; D008361:Mannosidases; D000118:Acetylglucosaminidase