title: Picture story. Fight the flu.
mesh_terms: D019267:Hemagglutinin Glycoproteins, Influenza Virus / Q000648:ultrastructure*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D009980:Influenza A virus / Q000235:genetics* / Q000472:pathogenicity* / Q000502:physiology; D007251:Influenza, Human / Q000235:genetics / Q000401:mortality / Q000821:virology; D008958:Models, Molecular; D011487:Protein Conformation; D011498:Protein Precursors / Q000648:ultrastructure
chemical_list: D019267:Hemagglutinin Glycoproteins, Influenza Virus; D011498:Protein Precursors