Vincent C. Lombardi,1* Francis W. Ruscetti,2* Jaydip Das Gupta,3 Max A. Pfost,1 Kathryn S. Hagen,1 Daniel L. Peterson,1 Sandra K. Ruscetti,4 Rachel K. Bagni,5 Cari Petrow-Sadowski,6 Bert Gold,2 Michael Dean,2 Robert H. Silverman,3 Judy A. Mikovits1† 1Whittemore Peterson Institute, Reno, NV 89557, USA. 2Laboratory of Experimental Immunology, National Cancer Institute- Frederick, Frederick, MD 21701, USA. 3Department of Cancer Biology, The Lerner Research Institute, The Cleveland Clinic Foundation, Cleveland, OH 44106, USA. 4Laboratory of Cancer Prevention, National Cancer Institute-Frederick, Frederick, MD 21701, USA. 5Advanced Technology Program, National Cancer Institute-Frederick, Frederick, MD 21701, USA. 6Basic Research Program, Scientific Applications International Corporation, National Cancer Institute-Frederick, Frederick, MD 21701, USA.