FIGURE 1.

Sera of pregnant women with antiphospholipid syndrome (APS) exhibit increased cell‐free DNA and neutrophil extracellular trap (NET) levels. A, Cell‐free DNA was measured in the sera of pregnant women with APS (n = 22) or healthy control (HC) pregnant women (n = 22). B, Myeloperoxidase (MPO)‐DNA complexes as markers of circulating NETs were measured in the same sera by MPO‐DNA ELISA. C, ELISA of MPO levels in sera of patients with APS (n = 22) or HCs. D, Neutrophil elastase (NE) was measured as another marker of NETs in sera of patients with APS (n = 22) or HCs using ELISA. *P < 0.05. Data are presented as the mean ± SD. ELISA, enzyme‐linked immunosorbent assay