Cover legend: Confocal immunofluorescence image of a whole-mount of bullfrog sacculus, depicting the localization of myosin IIIa at the tips of the stereocilia. The image reveals the thimble-like pattern of the protein (yellow), surrounding the actin core (blue). For more information, see the article by Schneider et al. in the October 4, 2006 issue (pages 10243–10252).