Survival and viral load data.

<p>(<b>A)</b> Survival days post-inoculation (dpi) for rhesus macaques inoculated with SIVΔ<i>vpx</i> compared to animals inoculated with SIVmac239 (SIV239E with encephalitis or SIV239noE without encephalitis) or other mutant viruses (SIVΔ<i>nef</i> or SIVΔ3. SIVΔ<i>vpx</i>-infected macaques survived significantly longer with a slower disease progression compared to SIV239E or SIV239noE animals, but did not differ in survival length compared to SIVΔ<i>nef</i> or SIVΔ3. <b>(B)</b> Plasma viral RNA from SIVΔ<i>vpx</i>-infected rhesus macaques expressed as RNA copy equivalents per ml plasma from chronic disease or near-terminal collections (range 329–1140 dpi, median 730 dpi).