title: Correlation of pathogenicity and gene constellation of an influenza A virus (fowl plague). I. Exchange of a single gene.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000096:biosynthesis; D002645:Chickens; D005472:Fluorouracil; D005796:Genes; D009980:Influenza A virus / Q000032:analysis / Q000276:immunology / Q000472:pathogenicity*; D009153:Mutagens; D009154:Mutation; D012367:RNA, Viral / Q000032:analysis; D011995:Recombination, Genetic
chemical_list: D000914:Antibodies, Viral; D009153:Mutagens; D012367:RNA, Viral; D005472:Fluorouracil