Affiliation: | (1) Tumor Vaccines and Biotechnology Branch, Division of Cellularand Gene Therapies, Center for Biologics evaluation and Research, Food and Drug Administration, RM 2NN2), Building 29B, 8800 Rockville Pike, 20892 Bithesda, MA;(2) Advanced Technology Center, Center for Cancer Research, National Cancer Institute, 20877 Gaithersburg, MD |