Postdoctoral positions are available to study cardiac stem cell biology and epigenetic regulation of cell fate decisions. Experience with developmental systems and/or biostatistics is recommended. See Nat. Med. 19: 760-765, 2013; Nat. Med. 19: 829-836, 2013; and Science. 334: 1420-1424, 2011. Send CV, names of 3 references and a letter describing research experience to: Dr. Jonathan Epstein c/o Carolyn Henry at carolynp@mail.med.upenn.edu.