The immune system’s battle against pathogens includes the “respiratory burst,” a rapid release of ROS from leukocytes, thought to play a role in destroying the invading species. In this issue of the JCI, Paiva et al. demonstrate that oxidative stress actually enhances infection with the protozoan Trypanosoma cruzi, by a mechanism that may involve facilitating parasite access to iron. Their findings suggest a novel direction for the development of drugs against intracellular parasites.
Norma W. Andrews
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