Aus dem Interfakultären Institut für Zellbiologieder Universität TübingenAbteilung ImmunologieAbteilungsleiter: Professor Dr. H.-G. RammenseeOn Memory T Lymphocytes:Heterogeneity of theImmunological MemoryInaugural-Dissertationzur Erlangung des Doktorgradesder Medizinder Medizinischen Fakultätder Eberhard-Karls-Universitätzu Tübingenvorgelegt vonVolker Teichgräberaus Laupheim2004Dekan: Professor Dr. C. D. Claussen1. Berichterstatter:. H.-G. Rammensee2. Berichterstatter: Professor Dr. C. MüllerDedicated to my motherBarbara VeroniqueTable of ContentsIndex of Figures and Tables VI1 General IntroductionHistorical Perspective ........................................................................................... 2The Immune System ............................................................................................. 4Innate Immunity ................................................................................................. 4Adaptive Immunity 5Antigen Processing and Presentation ................................................................. 6Viral Infection........................................................................................................ 9Virus Propagation ............................................................................................... 9Types of Viral Infection ....................................................................................