1. California Institute for Quantitative Biosciences, University of California, 2151 Berkeley Way, Berkeley, CA 94704-5230, USA
2. NASA Ames Space Portal, NASA Ames Research Center, MS 555-2, Moffett Field, CA 94035, USA
3. Bioengineering Branch, NASA Ames Research Center, MS 239-15, Moffett Field, CA 94035, USA
4. E.O. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, MS 955-512L, Berkeley, CA 94720, USA
5. Department of Bioengineering, University of California, Berkeley, CA 94720, USA