Cell pellet microarray sections were stained with PAb416, Xt7, or 2t2 overnight at 4°C and counterstained with hematoxylin. Positive staining (outlined in red) intensity is graded from 0 to 3 (+, weak; ++, moderate; +++, strong). Original magnification, ×20. BKV, BK virus; JCV, JC virus; KIV, KI virus; WUV, WU virus; MCV, Merkel cell polyomavirus; HPyV, human polyomavirus; TSV, trichodysplasia-spinulosa virus; NJPyV, New Jersey polyomavirus.