title: [Studies of adaptation of influenza viruses to their replication in low temperature. I. Biological properties].
abstract: Influenza A/H3N2/ virus strains derived from various isolations and replicated in lowered temperatures (37 degrees, 35 degrees, 33 degrees, 30 degrees) in chicken embryos were used for the study. An alteration of temperature optimum of neuraminidase activity was established after 12-15 passages of influenza virus in lowered replication temperature and it differed depending on tested strain. During adaptation process of viruses to lowered replication temperatures no correlation between neuraminidase activity and haemagglutinating titer was seen.
authors.affiliation: Zakład Wirusologii PZH w Warszawie.
authors.forename: L
authors.initials: L
authors.lastname: Brydak
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D002642:Chick Embryo; D003080:Cold Temperature; D003470:Culture Media; D006387:Hemagglutination, Viral / Q000502:physiology; D066298:In Vitro Techniques; D009980:Influenza A virus / Q000201:enzymology / Q000502:physiology*; D009439:Neuraminidase / Q000502:physiology; D051381:Rats; D012692:Serial Passage; D014779:Virus Replication / Q000502:physiology*
chemical_list: D003470:Culture Media; D009439:Neuraminidase
vernacular_title: Badania nad adaptacja wirusów grypy do obnizonej temperatury replikacji. I. Właściwości biologiczne.