Features of the MEL x NWS recombination systems in influenza A virus. IV. Increments of virulence during successive cycles of double infection with two strains of influenza A virus.
D006801:Humans; D009980:Influenza A virus; D007251:Influenza, Human; D009975:Orthomyxoviridae / Q000235:genetics*; D011995:Recombination, Genetic; D014774:Virulence
INFLUENZA VIRUSES/genetics