Instituto Oswaldo Cruz, Ministério da Saúde, Memórias do Instituto Oswaldo Cruz., 3(91), p. 346-348, 1996
DOI: 10.1590/s0074-02761996000300017
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A successful HIV vaccine must elicit immune responses which recognize variants of HIV circulating in the vaccine target population. It is therefore important to understand HIV genetic and antigenic variation in geographic areas where vaccine trials are anticipated.