Figure 1. Renal biopsy specimen - renal interstitium infiltrated with large inflammatory cell aggregates containing lymphocytes, plasmocytes and fibrosis. (a) The lymphocytic and plasmocytic interstitial tubulitis is associated with segmental and global glomerulosclerosis. (b) The lymphoid cells express CD8+ and CD138+ (immunostain). Few CD4+ lymphocytes were present (not shown). Original magnification of each panel, × 400.
