text_1: Neutrophil extracellular trap (NET) antigens may contain the targeted autoantigens PR3 and MPO.
text_2: Here we show that chromatin fibers, so-called neutrophil extracellular traps (NETs), are released by ANCA-stimulated neutrophils and contain the targeted autoantigens proteinase-3 (PR3) and myeloperoxidase (MPO).