Observations such as these encourage the speculation that there may be subtle differences in the regulation of HIV-1 and HIV-2 expression that may be relevant to the possible longer latency and reduced pathogenicity of HIV-2 .
observations such as these encourage the speculation that there may be subtle differences in the regulation of hiv-1 and hiv-2 expression that may be relevant to the possible longer latency and reduced pathogenicity of hiv-2 .
O O O O O O O O O O O O O O O B-other_name O B-virus O B-virus O O O O O O O O O B-other_name O O O O B-virus O