FIG. 2.

Medial hyperplasia in SHIV-env-infected macaque demonstrated by two staining methods. Trichrome stain (upper) helps to distinguish intima and medial cell layers. H&E staining with (lower left) and without (lower right) condenser demonstrates that while the internal elastic lamina, separating the intima and media, can be visualized with all stains, it is most easily distinguished on trichrome and H&E without condenser. The arrow highlights the internal elastic lamina. Magnification 40 ×. Color images available online at www.liebertonline.com/aid