The rapid discoveries of X-rays by Roentgen, natural radioactivity by Becquerel and radium by Curies at the end of 19th century changed broadly the worlds of physics, biology and medicine. At the close of the 20th century, fundamental discoveries in biology at moecular level, often appear to overshadow this earlier work. However as more basic discoveries are made these separate scientific eras merged to contribute to the conquest of disease, specially cancer. The rapid advancements achieved during recent years, mainly due to revolutionary methodological improvements, have led to an unparalleled explosion of information. The expOnential growth of data so impressive that the conceptual evaluation of the material has seemed almost an insignificant part of the scientific process. All these achievements have allowed researchers to ask new questions or to rephrase old Ones. The result is a virtual avalanche of new formed knowledge.