title: [Studies on the quality of enzyme preparation (VI) beta-galactosidase preparation].
mesh_terms: D005696:Galactosidases / Q000592:standards*; D005697:Galactosides / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D011786:Quality Control; D013379:Substrate Specificity; D001616:beta-Galactosidase / Q000378:metabolism / Q000592:standards*
chemical_list: D005697:Galactosides; D005696:Galactosidases; D001616:beta-Galactosidase