Studies on mixed infection with Newcastle disease virus. II. The occurrence of Newcastle disease virus heterozygotes and study of phenotypic mixing involving serotype and thermal stability.
D000818:Animals; D060085:Coinfection; D006579:Heterozygote; D009521:Newcastle Disease / Q000821:virology*; D009522:Newcastle disease virus; D065288:Serogroup
NEWCASTLE DISEASE/virology