1. Departments of Scientific Research, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA
2. Departments of Veterinary Sciences, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA; The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
3. Departments of Scientific Research, Armed Forces Radiobiology Research Institute, Uniformed Services University of the Health Sciences, Bethesda, Maryland, USA. william.blakely@usuhs.edu