title: Alternative cells for regeneration.
abstract: Normally, in fish fin regeneration, bone regenerates from bone. But what happens when there is no bone? Singh et al. (2012) show in this issue of Developmental Cell that the bony rays still regenerate from an alternative cell source.
authors.affiliation: Stem Cell Institute, University of Minnesota, Minneapolis, MN 55455, USA. slack017@umn.edu
authors.forename: Jonathan M W
authors.initials: JM
authors.lastname: Slack