Fig. 7.

Renal pathology in BBS7−/− macaques Case 1 (4 years) and Case 2 (6 years). Compared with a normal control (A), kidneys of BBS7−/− macaques (D,G) were scarred with extensive parenchymal loss grossly. H&E stained sections of affected macaques (E,F,H,I) demonstrated loss of nephrons with replacement fibrosis, tubule atrophy and ectasia. Cystic tubules were lined with attenuated to hyperplastic epithelium (F,I) which occasionally formed micropapillary projections (I). These microscopic findings were not present in the normal control (B,C). Black scale bars represent 100 μm.