title: [Toxic properties of the virus of variola vaccine and the Duran-Reynolds factor].
authors.forename: M A
authors.initials: MA
authors.lastname: MOROZOV
authors.forename: S S
authors.initials: SS
authors.lastname: KASATKEVICH
mesh_terms: D006801:Humans; D012899:Smallpox; D012900:Smallpox Vaccine; D014780:Viruses
chemical_list: D012900:Smallpox Vaccine