本世纪后期，肿瘤分子生物学和肿瘤分子遗传学的研究大大地增加了对癌症发生和发展机制的了解，并已开始反映在人类癌症诊断和防治的临床实践中。本讲将从以下三方面总结已经取得的成果和指出下一世纪分子肿瘤学研究的前景和方向：癌症的发生和防癌措施；癌症的分子标志和早期 In the later part of this century, the study of molecular biology of tumors and molecular genetics of tumors has greatly increased the understanding of the mechanisms of cancer occurrence and development and has begun to be reflected in the clinical practice of human cancer diagnosis and prevention. This lecture will summarize the achievements made in the following three aspects and point out the future and direction of molecular oncology research in the next century: the occurrence of cancer and cancer prevention measures; the molecular signs and early stages of cancer