title: Freezing and freeze-drying of viruses.
mesh_terms: D004279:DNA, Viral / Q000032:analysis; D005612:Freeze Drying; D005615:Freezing; D006863:Hydrogen-Ion Concentration; D012367:RNA, Viral / Q000032:analysis; D012997:Solvents / Q000494:pharmacology; D014776:Virus Cultivation; D014780:Viruses / Q000032:analysis* / Q000145:classification / Q000187:drug effects
chemical_list: D004279:DNA, Viral; D012367:RNA, Viral; D012997:Solvents