Viruses, in particular retroviruses, and cancer, from molecular mechanisms to drug design. Replication of HIV, discovery of the retroviral RNase H, development of antiretroviral mechanisms driving HIV into suicide, and various oncogenes such as identification of Myc and Myb as nuclear transcription factors, and discovery of the Mil/Raf kinase as retroviral oncogene. Interest in signal transduction in normal and tumor cells, gene regulation, cell-cycle, transcription factors, PDZ domains, scaffold proteins, oncogenes in leukemias, lymphomas, cancer, gene medicine/therapy, vaccines, HIV/AIDS, Influenza, viruses in immune-suppression, antiviral drug design, silencing by siDNA. biotechnology, non-coding RNA, endogenous viruses, evolution of viruses.