1. Center for Biomolecular Science and Engineering, University of California, Santa Cruz, CA 95064, USA.
2. Department of Developmental Biology, Stanford University, Stanford, CA 94305, USA.
3. Howard Hughes Medical Institute, University of California, Santa Cruz, CA 95064, USA.
4. Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology (MIT), Cambridge, MA 02139, USA.
5. Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
6. Department of Biological Statistics and Computational Biology, Cornell University, Ithaca, NY 14853, USA.
7. Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden.