1. Department of Lipids and Liposomes, Faculty of Biotechnology, University of Wrocław, Przybyszewskiego 63/77, 51-148 Wrocław, Poland, and Department of Medical Microbiology and Immunology, School of Medicine and Public Health, University of Wisconsin-Madison, 6245 Microbial Science Building, 1550 Linden Drive, Madison, Wisconsin 53706