New Antitumor Promoters: (-)-Epigallocatechin Gallate and Sarcophytols A and B

Abstract
Cancer development is a severe social and medical problem for human beings, because the occurrence of most cancers is associated with aging or the elongated lifespan of humans. Although recent advances in cancer diagnosis as well as cancer therapy are remarkable, we have to note that they have become more and more costly. We as basic cancer researchers are concerned about how we can contribute to solving this problem.