1. Joint
Initiative for Metrology in Biology, Stanford University, 443 Via Ortega,
Shriram Center, Stanford, California 94305, United States
2. Genome
Scale Measurements Group, National Institute of Standards and Technology, 443 Via Ortega, Shriram Center, Stanford, California 94305, United States
3. Department
of Bioengineering, Stanford University, 443 Via Ortega, Shriram Center, Stanford, California 94305, United States
4. National
Bioenergy Center, National Renewable Energy Laboratory, 15013 Denver
West Parkway, Golden, Colorado 80401, United States