Friedrich Marks, PhD, is Professor of Biochemistry at the University of Heidelberg and Emeritus Department head, German Cancer Research Center. Dr. Marks has been teaching biochemistry, in particular signal transduction, for more than 30 years. His research has focused on the role of signaling reactions in tumor development.Ursula Klingm�¼ller, PhD, is a lecturer at the University of Heidelberg and Head of the Systems Biology of Signal Transduction Division, German Cancer Research Center. Dr. Klingm�¼ller�s research focuses on systems biology of signal transduction and dynamic pathway modeling.Karin M�¼ller-Decker, PhD, is a lecturer at the University of Heidelberg and Head… of the Tumor Models Units, German Cancer Research Center. Dr. M�¼ller-Decker is conducting pioneering work on eicosanoid signaling in tumor development.