Figure 3.

Proportions of vRNA⁺ cells that were CD68⁺ in lung and spleen tissues from SIV-infected rhesus macaques. ISH for SIV RNA and IHC for CD68 were applied simultaneously to identify productively infected cells that were CD68⁺ monocytes/macrophages. Presented are the percentages of vRNA⁺ cells that were also CD68⁺. Whenever possible >100 vRNA⁺ cells were examined from each animal for each tissue. The data from all five lobes of lung have been combined for each animal. Lung tissues examined that contained no vRNA⁺/CD68⁺ cells are indicated (*).