Origin and evolution of influenza virus hemagglutinin genes.

@article{Suzuki2002OriginAE,
  title={Origin and evolution of influenza virus hemagglutinin genes.},
  author={Yoshiyuki Suzuki and Masatoshi Nei},
  journal={Molecular biology and evolution},
  year={2002},
  volume={19 4},
  pages={501-9}
}
Influenza A, B, and C viruses are the etiological agents of influenza. Hemagglutinin (HA) is the major envelope glycoprotein of influenza A and B viruses, and hemagglutinin-esterase (HE) in influenza C viruses is a protein homologous to HA. Because influenza A virus pandemics in humans appear to occur when new subtypes of HA genes are introduced from… CONTINUE READING