Author information:
(1)Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, 
Boston, MA, 02115, USA.
(2)Wyss Institute for Biologically Inspired Engineering, Harvard University, 
Boston, MA, 02115, USA.
(3)Department of Systems Biology, Harvard Medical School, Boston, MA, 02115, 
USA.
(4)Howard Hughes Medical Institute, Cambridge, MA, 02138, USA.
(5)Department of Chemistry and Chemical Biology, Harvard University, Cambridge, 
MA, 02138, USA.
(6)Department of Developmental Biology, Stanford University, Stanford, CA, 
94305, USA.
(7)Department of Physics, Harvard University, Cambridge, MA, 02138, USA.
(8)Wyss Institute for Biologically Inspired Engineering, Harvard University, 
Boston, MA, 02115, USA. py@hms.harvard.edu.
(9)Department of Systems Biology, Harvard Medical School, Boston, MA, 02115, 
USA. py@hms.harvard.edu.
(10)Howard Hughes Medical Institute, Cambridge, MA, 02138, USA. 
zhuang@chemistry.harvard.edu.
(11)Department of Chemistry and Chemical Biology, Harvard University, Cambridge, 
MA, 02138, USA. zhuang@chemistry.harvard.edu.
(12)Department of Physics, Harvard University, Cambridge, MA, 02138, USA. 
zhuang@chemistry.harvard.edu.
(13)Department of Genetics, Harvard Medical School, 77 Avenue Louis Pasteur, 
Boston, MA, 02115, USA. twu@genetics.med.harvard.edu.