Research article by Julian Sosnik, Likun Zheng, Christopher Rackauckas, Michelle Digman, Enrico Gratton, Qing Nie and Thomas Schilling published on April 12 entitled “Noise Modulation in Retinoic Acid Signaling Sharpens Segmental Boundaries of Gene Expression in the Embryonic Zebrafish Hindbrain” – eLife 2016;5:e14034. DOI:10.7554/eLife.14034.