 | Genetic Variability: Implications for the Development of HIV Vaccines (UNAIDS, 1996, 16 p.) |
 |  | (introduction...) |
| | Classification of HIV |
| | Genetic variability of HIV |
| | Geographical distribution of HIV-1 subtypes |
| | Antigenic significance of HIV-1 genetic variability |
| | Biological variability of HIV-1 |
| | WHO network for HIV isolation and characterization |
| | References |
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