Images and probe sequence provided by Claire Anderson. The probe was synthesized from cDNA clone ChEST139e12; Related article: Anderson C1, Khan MAF1, Wong F2, Solovieva T1, Oliveira NMM1, Baldock RA3, Tickle C4, Burt DW2, Stern CD1. A strategy to discover new organizers identifies a putative heart organizer. Nat Commun. 2016 Aug 25;7:12656. doi: 10.1038/ncomms12656.