1. Rowland Institute at Harvard, Harvard University, Cambridge, Massachusetts 02142, Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, Massachusetts 02114, Graduate Program in Cell Molecular and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University School of Medicine, Boston, Massachusetts 02111, Aga Khan Medical School, Karachi, Pakistan, Department of Dermatology, Harvard Medical School, Boston, Massachusetts 02115, and Harvard−MIT Division of...