美国珀杜大学和美国农业部下属农业研究局的科学家，在研究利用转基因技术延迟西红柿成熟期的过程中，“意外”地开发出“抗癌西红柿”。这种新型转基因西红柿插入了一个从酵母中提取来的基因。这一酵母基因可与另一“启动基因”配合工作，后者控制酵母基因只在水果中开启。该 Scientists at Purdue University and the Agricultural Research Service, a unit of the U.S. Department of Agriculture, “accidentally” developed “anticancer tomatoes” when they studied the use of GM technology to delay the maturation of tomatoes. The new GMO tomato inserts a gene that has been extracted from yeast. The yeast gene works with another “promoter” that controls the yeast gene to turn on in fruit alone. This