title: Studies on parainfluenza type 2 and 4 viruses obtained from patients with common colds.
abstract: Four agents which were obtained from adults with common colds were cultivated and identified-one was influenza type B and the others were parainfluenza viruses of types 2 and 4. Their cultivation was assisted by the use of organ cultures of human embryo tracheal or nasal epithelium. They infected and caused typical common colds in volunteers.
mesh_terms: D000328:Adult; D003139:Common Cold / Q000382:microbiology*; D046508:Culture Techniques; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D009500:Neutralization Tests; D009975:Orthomyxoviridae / Q000302:isolation & purification; D018108:Respirovirus / Q000302:isolation & purification*; D012703:Serotyping; D014776:Virus Cultivation