Recombination between virulent and non-virulent strains of influenza virus.  II.  The behaviour of virulence markers on recombination.
D015415:Biomarkers; D006801:Humans; D009975:Orthomyxoviridae; D011995:Recombination, Genetic; D014774:Virulence
D015415:Biomarkers
INFLUENZA VIRUSES