Fig1A(Dmrt1). [doi:10.1371/journal.pbio.0050234] [PMID:17803355] Copyright: This image is from Ahituv N; Zhu Y; Visel A; Holt A; Afzal V; Pennacchio LA; Rubin EM, PLoS Biol 2007 Sep;5(9):e234, an open-access article distributed under the terms of the Creative Commons Attribution License