1. Department of Molecular Biology and Immunology and Center for Commercialization of Fluorescence Technologies, University of North Texas Health Science Center, 3500 Camp Bowie Boulevard, Fort Worth, Texas 76107
2. Department of Molecular and Cellular Pharmacology, University of Miami, Miller School of Medicine, 1600 NW 10th Avenue, Miami, Florida 33136
3. Department of Physics, Macquarie University, Sydney, NSW 2109, Australia