FIG. 7.

Confocal microscopic analysis of mesenteric lymph nodes of representative RP and CP macaques. Triple-label confocal microscopy of lymph nodes from an RP macaque (A and B) and a CP macaque (C and D) to identify macrophages (HAM56, white), SIV RNA expression (ISH, green), and T cells (CD3, red). The majority of SIV-expressing cells in the tissues from the RP macaque coexpressed Ham56, a marker for macrophages (magnification, ×63). Rare CD3⁺ T cells coexpressing SIV are indicated by asterisks. In contrast (C and D), the majority of SIV-expressing cells in tissues of the CP macaques (H187 and H063) coexpressed CD3 (magnification, ×63).