title: Immunotyping HIV-1 in the 1990s. WHO Collaborating Network.
authors.affiliation: Virus Biology Section, LTCB, BCP, DCE, NCI-FCRDC, NIH, Frederick, Md., USA.
authors.forename: P L
authors.initials: PL
authors.lastname: Nara
mesh_terms: D000956:Antigens, Viral / Q000276:immunology*; D005838:Genotype; D015497:HIV-1 / Q000235:genetics / Q000276:immunology*; D006801:Humans; D009500:Neutralization Tests
chemical_list: D000956:Antigens, Viral