Release of NETs occurs in a parasite strain-independent manner. Purified mouse neutrophils were added to type I (RH) (A to D), type II (PTG) (E and F), and type III (CTG) (G and H) strains of Toxoplasma, and NET formation was assessed 4 h later by staining for DNA (A, F, and H) and histone H3 (B). Tachyzoites were visualized by staining with Ab to the parasite surface protein SAG-1 (C, E, and G). The insets in panels D, F, and H are merged and expanded images showing the entrapment of parasites within NETs. The scale bars indicate 20 μm. Experiments were repeated at least 3 independent times, with similar results.