1. Department of Cancer Biology and Metastasis Research Center, The University of Texas MD Anderson Cancer Center, Houston, Texas 77054, United States
2. Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, United States
3. Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
4. SIMS Laboratory, Shared Equipment Authority, Rice University, Houston, Texas 77005, United States
5. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas 77030, United States
6. Department of Bioengineering, Rice University, Houston, Texas 77005, United States