This pseudocolored transmission electron micrograph shows three vestibular hair cells from an adult mouse. The nuclei of two type I vestibular hair cells are positioned below a type II hair cell, which is partially surrounded by a partial calyx-like afferent and therefore is presumed to be converting to a type I-like hair cell. For more information, see the article by Stone et al. (pages 6217–6233). Cover image: Cover image: Rémy Pujol.