PMC9977576_01
Kidney biopsy with viral inclusions
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FIG1
Numerous viral inclusions (Figure 1) involving a large number of cells were seen.
Kidney biopsy: simian virus 40 (SV40) immunostain
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FIG2
SV40 immunostain (Figure 2) was positive in nuclei with inclusions indicative of polyomavirus nephropathy.