Fig. 2.
IIF of selected samples. IIF images of sera with anti-DFS70 antibodies (A), anti-dsDNA antibodies (B), and antitopoisomerase antibodies (C). The IIF substrate used was NOVA Lite DAPI ANA Kit, Werfen) on NOVA View (Werfen). The assay for anti- DFS70/LEDGFp75 antibodies was QUANTA-Flash DFS70 CLIA.