title: Clinical, virological & serological studies on monkey after intravenous inoculation of virulent variola virus.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D003168:Complement Fixation Tests; D000882:Haplorhini; D006387:Hemagglutination, Viral; D012901:Variola virus / Q000276:immunology* / Q000472:pathogenicity*; D014774:Virulence