In Giles Cory and Anne Ridley's article “Cell motility: Braking WAVES” (Nature 418, 732–733; 2002), the wrong attribution appeared for the time-lapse film of a neutrophil chasing a bacterium, provided as a spectacular example of cell motility. The movie was made by the late David Rogers at Vanderbilt University, Nashville, Tennessee (see http://expmed.bwh.harvard.edu/projects/motility.html).