title: [Devices for preparing and fractionating gradients of concentrations of substances in solutions].
mesh_terms: D002499:Centrifugation, Density Gradient / Q000295:instrumentation*; D008967:Molecular Biology / Q000295:instrumentation; D012996:Solutions; D014586:USSR; D014773:Virology / Q000295:instrumentation*
chemical_list: D012996:Solutions
vernacular_title: Prisposobleniia dilia prigotovleniia i fraktsionirovaniia gradientov kontsentratsiĭ veshchestv v rastvorakh