title: The World Health Organization Network for HIV Isolation and Characterization: summary of a pilot study.
authors.affiliation: Vaccine Development Unit, World Health Organization, Geneva, Switzerland.
authors.forename: S
authors.initials: S
authors.lastname: Osmanov
authors.forename: W L
authors.initials: WL
authors.lastname: Heyward
authors.forename: J
authors.initials: J
authors.lastname: Esparza
mesh_terms: D014644:Genetic Variation; D005838:Genotype; D006678:HIV / Q000145:classification / Q000235:genetics / Q000302:isolation & purification*; D015658:HIV Infections / Q000821:virology; D015497:HIV-1 / Q000145:classification / Q000235:genetics / Q000302:isolation & purification; D006801:Humans; D010641:Phenotype; D010865:Pilot Projects; D014944:World Health Organization