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. 2020 Aug;8(15):923. doi: 10.21037/atm-20-1879

Table 3. Results of immunofluorescence staining from 44 patients with glomerular BKPyV involvement.

IF staining findings N (%)
Glomerular mesangial area and capillary loops
   IgA 3 (6.8)
   IgM 11 (25.0)
   IgG 2 (4.5)
   C3 2 (4.5)
   C1q 6 (13.6)
Fibrinogen 3 (6.8)
C4d deposition
   Along GBM 6 (13.6)
   Along TBM 18 (40.9)
   Along ptc 0

BKPyV, BK polyomavirus; IF, immunofluorescence; GBM, glomerular basement membranes; TBM, tubular basement membranes; ptc, peri-tubular capillaries.