Time-lapse video of Alox5+/+ (green) and Alox5−/− (red) bone marrow–derived eosinophils and a C. elegans dauer larva (blue) over the course of 60 min. Images were acquired once every 60 s and are displayed at a frame rate of 10/s. Fluorescent eosinophils and invisible nonfluorescent Alox5+/+ eosinophils make up 30% and 70% of the total cells, respectively. Stills from this video are shown in Fig. 3. Results represent two independent experiments. Bar, 50 µm.