title: [Physico-chemical state of DNA after long-term storage].
abstract: A physicochemical state of DNA was studied during 1-2 years when stored under different conditions: in the citric-salt solution and in the solution of 0.9% NaCl in the cold, in the citric-salt solution at frozen state (biopolymer concentration in the solution being approximately 2 mg/ml) and under 80% ethanol as a loose filamentous precipitate at 40 degrees C. It is shown that DNA retains its macromolecular structure for a long time under given conditions of conservation. These conditions of DNA preparations storage may be used for biopolymer conservation.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002951:Citrates; D004247:DNA; D004355:Drug Stability; D004356:Drug Storage; D000431:Ethanol; D005615:Freezing; D009690:Nucleic Acid Conformation; D012965:Sodium Chloride; D013696:Temperature; D013997:Time Factors
chemical_list: D002951:Citrates; D000431:Ethanol; D012965:Sodium Chloride; D004247:DNA
vernacular_title: Fiziko-khimicheskoe sostoianie DNK pri dlitel'nom khranenii