1. Laboratory of Tumor Immunology and Biology, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892.
2. Office of Biologics, National Center for Drugs and Biologics, Food and Drug Administration, Bethesda, MD 20892.
3. Department of Molecular Genetics and Microbiology, Rutgers Medical School, Piscataway, NJ 08854.
4. Department of Urology, Cancer Center/Institute of Cancer Research, Columbia University, College of Physicians and Surgeons, New York, NY 10032.