"Chromium Release Assay Measurements of Cytotoxic T Cell Response to EBVTransformed B Cells." under the direction of Dr. David Purtilo, The EppleyCancer Research Institute, The University of Nebraska Medical Center."Cell Regulation and Growth of Normal and Transformed Human Embryonic LungFibroblasts." under a Fulbright-Hayes Scholarship with Dr. Franz Oesch and Raimond Wieser."The Processing of hnRNA Transcripts to mRNA and the Role of Processinginvolved in Cell Growth and Regulation." under a Fulbright-HayesScholarship with Prof. Dr. Dr. Heinz C. Schroeder."The Mapping of the DNAse Hypersensitive Sites of the c-myb Oncogene duringthe Development of Myeloid Stem Cell Precursors to Mature Macrophages."under a Fulbright-Hayes Scholarship Renewal to West Germany with Prof. Dr.Albert E. Sippel, The Center for Molecular Biology Heidelberg.""The Mapping of the Antigenic Sites of HIV-1 using Chromium Release AssayMeasurements.""The Sequencing and Characterization of the c-ets Oncogene."under the direction of Dr. James Lautenberger and Dr. Takis Papas, TheNational Institute of Health, National Cancer Institute, Frederick CancerResearch Facility."The Sequencing of the HPV-26 and HPV-27 Papilloma Viruses." under thedirection of Prof. Dr. Herald zur Hausen. The German Cancer ResearchCenter Department of Applied Tumour Virology Heidelberg."The Cloning and Sequencing of Adenotin." under the direction of Prof. Dr.Schwab Department of Pharmacology, Heidelberg."Pathobiological Determinants of Atherosclerosis in Youth." World HealthOrganization, The International Society and Federation of CardiologyChapter 4 (Special Studies) under the direction of Prof. Dr. H. Otto andDr. Ingbert Siemens in the Institute for Pathology, Heidelberg.Renal Arterial Aneurisms; Surgery as a Treatment of Choice." The EuropeanJournal of Vascular Surgery. The University of Heidelberg Department ofSurgery under the direction of Prof. Dr. Allenberg and Dr. Hupp."Using in situ Reverse Transcription PCR as a Tool for Analyzing TransgenicMice." under the direction of Prof. Dr. Peter Seeburg, The Center forMolecular Biology Heidelberg and the Max Planck Institute for Medical Research."The Cloning of Connexin 44.2 and Detection using in situ RT-PCR." The Journalof Neuroscience under the direction of Prof. Dr. Rolf Dermietzel.“Confocal microscopy of 5´ UTR´s of the Estrogen Receptor under the direction ofDr. Frank Gannon of the European Molecular Biology Organization