Ebiocb16

Venous blood was drawn from IgAV patients and HBDs and collected into heparin-containing tubes. Whole blood immunophenotyping was performed using 7-Color Immunphenotyping kit (Miltenyi Biotec). Briefly, 100 μl of whole blood was incubated with 10 μl immunophenotyping reagent for 10 min in the dark, at 4 °C. After incubation, erythrocytes were lysed using Red Blood Lysing Solution (Miltenyi Biotec). Neutrophil phenotyping was performed in 50 μl of whole blood, incubated for 30 min at 4 °C in the dark with mouse anti-human antibodies to CD16 (conjugated to PE, clone eBioCB16, eBioscience), CD62L (conjugated to PE-Cyanine 5, clone DREG56, eBioscience), and CD11b (conjugated to APC, clone ICRF44, eBioscience). After incubation, samples were lysed, using Whole Blood Lysing Reagent Kit (Beckman Coulter). All samples were analyzed using flow cytometer MACSQuant Analyzer 10 (Miltenyi Biotec). Analysis of flow cytometry data was performed using MACSQquantify (Analysis Software version 2.8) and FlowLogic (Flow Cytometry Analysis Package, version 700.0a).