“…Immunohistochemistry and double-immunofluorescence was performed as previously described. 73,74 Anti-human LTb mAb (Clone B27, Biogen), anti-human LTbR (RPA481Hu, Hölzel Diagnostika, Köln, Germany), anti-human CD20 mAb (clone L26, DakoCytomation, Dako Deutschland, Hamburg, Germany), CD3 (CD3-12, Serotec, Oxford, UK), anti-Aquaporin-1 (Millipore, Temecula, CA), and secondary reagents from Alexa Fluor (Life Technologies, Carlsbad, CA) were used. Archival biopsies were included from patients with pauci-immune cGN (n ¼ 10), IgA nephropathy (n ¼ 8), lupus nephritis (n ¼ 8), and membranous nephropathy (n ¼ 10).…”