title: Preservation of infectious cytomegalovirus.
mesh_terms: D046508:Culture Techniques; D003587:Cytomegalovirus / Q000254:growth & development* / Q000302:isolation & purification; D005615:Freezing; D006801:Humans; D008722:Methods; D009584:Nitrogen; D014556:Urine / Q000382:microbiology; D014776:Virus Cultivation
chemical_list: D009584:Nitrogen