1. Department of Chemistry, Brandeis University, 415 South St., Waltham, Massachusetts 02453, United States
2. Department of Biochemistry and Molecular Genetics, University of Alabama at Birmingham, Birmingham, Alabama 35294, United States
3. Department of Physics, Brandeis University, Waltham, Massachusetts 02453, United States
4. Department of Cancer Biology, Center for Chemical Imaging in Biomedicine, Advanced Cell Analysis Service Center, University of Cincinnati College of Medicine, Cincinnati, Ohio 45267, United States
5. O’Neal Comprehensive Cancer Center University of Alabama at Birmingham, Birmingham, Alabama 35294, United States