Liver and kidney lesions detected in SIVsab-infected NHPs. a Severe bridging mononuclear infiltrate peri portal and around the central veins (SIVsab/PTM, HE); b hepatic fibrosis (SIVsab/PTM, HE); c no kidney lessons are detected in SIVagm-infected African green monkeys; d microthrombi in the glomerular capillaries and afferent arterioles (SIVsab/PTM, IHC for fibrinogen); e parietal epithelial cell hyperplasia associated with collapsed capillaries (a condition involved in the development of focal, segmental glomerulosclerosis) (SIVsab/PTM, HE); f interstitial nephritis—diffuse mononuclear infiltration associated with hyaline casts in the renal tubules (SIVsab/PTM, HE); g interstitial pseudogranulomatous nephritis (SIVsab/PTM, HE)—interstitial nephritis with focal collections of lymphocytes with a germinal center-like area surrounded by other mononuclear cells; h interstitial nephritis (detail—dilated tubules with hyaline casts); i interstitial nephritis (detail—dilated tubules with cellular casts—adherent desquamated epithelial cells of the tubule lining (SIVsab/PTM, HE)