Cancer Research is a multidisciplinary scientific field. Basic cancer research employs in vitro and in vivo models to identify tumor specific regulatory mechanisms and targets for cancer therapy. It investigates the cellular mechanisms of carcinogens to understand cancer causes and analyses exogenous and endogenous factors contributing to tumor development. The results are applied to develop diagnostic procedures, new therapies, and preventive strategies (translational research). Clinical oncology comprises the development and evaluation of new therapeutics and diagnostic procedures.