Authors' Affiliations: 1Medical Oncology, National Center for Tumor Diseases; and 2Immune Monitoring Unit G101, German Cancer Research Center (DKFZ), NCT National Center for Tumor Diseases and Institute for Immunology, University Heidelberg, Germany; 3Center for Infectious Medicine, Department of Medicine, Karolinska Institutet, Karolinska University Hospital, 141 86 Stockholm, Sweden; 4Department of Surgery; 5Institute of Pathology; and 6Hamamatsu Tissue Imaging and Analysis (TIGA) Center, Institute for Medical Biometry and Informatics, University of Heidelberg, Germany; and 7Department of Transplantation Immunology, IFB-Tx, Hannover Medical School, MHH, Carl-Neuberg-Str. 1, 30625 Hannover, Germany (At 2011-02-15)