Abstract
Cancer research has allowed us to discover many genes implied in development of this disease. These genes are suppressors or oncogenes that participate in cellular proliferation, methastasis and/or capacity of cell to induce vascularization of the tissue. Also, it has allowed the discovery of molecules able to inhibit the growth of cells cancerous. However, periodic checkups continues to be the best prevention against cancer. At molecular level is difficult to diagnose it, perhaps because is necessary to go to the tissue level. Molecular markers are not yet a reliable method in order to obtain a diagnosis or forecast cancer, maybe because one forgets the tissue level.
