[1] Dana Farber Canc Inst, Boston, MA 02115 USA
[2] Massachusetts Gen Hosp, Adv Microscopy Program, Ctr Syst Biol, Boston, MA 02114 USA
[3] Massachusetts Gen Hosp, Adv Microscopy Program, Wellman Ctr Photomed, Boston, MA 02114 USA
[4] Brigham & Womens Hosp, Dept Pathol, Boston, MA 02115 USA