Dependence of membrane depolarization (a) and K+(86Rb) release (b) on the rate of production. This figure was originally published by Rada, B. K., Geiszt, M., Káldi, K., Timár, Cs., & Ligeti, E. 2004 Dual role of phagocytic NADPH oxidase in bacterial killing. Blood 104, 2947–2953. © the American Society of Hematology.