title: [Method of preserving material for virological, microbiological and serological studies in Dewar vessels with liquid nitrogen].
mesh_terms: D000818:Animals; D005615:Freezing; D006801:Humans; D008828:Microbiological Techniques / Q000295:instrumentation; D011309:Preservation, Biological / Q000295:instrumentation / Q000379:methods*; D012699:Serology / Q000295:instrumentation / Q000379:methods; D014773:Virology / Q000295:instrumentation / Q000379:methods
vernacular_title: Sposob khraneniia materiala dlia virusologicheskogo, mikrobiologicheskogo i serologicheskogo issledovaniĭ v sosudakh D'iuara s zhidkim azotom.