最近,美国的华盛顿邮报(The Washigton Post)、洛杉矶时报(The Los Angeles Times)和纽约时报(The New York Times)等主要新闻媒介,报道了发表在美国科学杂志(Science)上的二篇重要文章。这二篇论著的新观点是,从大剂量化合物的啮齿动物致癌试验结果,去推断人类肿瘤发生机制的研究中,细胞的有丝分裂增加和细胞增殖是肿癌发生的重要指标;大剂 Recently, major news media such as The Washigon Post, The Los Angeles Times, and The New York Times in the United States have reported two important issues published in the Science Journal of the United States. article. The new point of view of these two treatises is that from rodent carcinogenicity test results of high-dose compounds, to deducing the mechanism of human tumorigenesis, increased cell mitosis and cell proliferation are important indicators of tumorigenesis;