Institution: | (1) Institute for Experimental Pathology, German Cancer Research Center, Heidelberg, Germany;(2) Laboratory for Experimental Biology, University of Gothenborg, Sweden;(3) Department of Microbiology, Temple University School of Medicine, Philadelphia, Pennsylvania, USA;(4) Present address: Institut für Hygiene und medizinische Mikrobiologie, Universität Heidelberg, Klinikum Mannheim, D6, 2-4 68 Mannheim |