title: [Genesis of a pandemic virus: H1N1].
authors.affiliation: Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.
authors.forename: Pilar Breña
authors.initials: PB
authors.lastname: Pérez
mesh_terms: D000818:Animals; D004784:Environmental Monitoring; D006801:Humans; D053118:Influenza A Virus, H1N1 Subtype / Q000235:genetics*; D009980:Influenza A virus / Q000235:genetics*; D007251:Influenza, Human / Q000635:transmission* / Q000821:virology*; D058873:Pandemics; D014764:Viral Proteins / Q000737:chemistry / Q000502:physiology
chemical_list: D014764:Viral Proteins