Fig. 1From: Review article: BK virus in systemic lupus erythematosusA native renal biopsy with multiple intranuclear BK viral inclusions (a) and positive staining for SV40 T antigen (b) in the tubular epithelial cells (identified by the arrows). There is also extensive interstitial fibrosis and tubular atrophy, along with prominence of inflammatory cells in the interstitium and tubular cellsBack to article page