核糖核酸的应用与制备

核糖核酸除了在基因的表达和蛋白质的生物合成方面起着关键的作用外,还具有改善机体多种生理功能的作用.核糖核酸的结构与功能及应用的研究一直是生物科学的重点领域之一.概述了核糖核酸的制备状况及其在临床、医药、保健、食品加工业、农业生产等领域的应用.     

Tumorigenic transformation of mammalian cells induced by a normal human gene homologous to the oncogene of Harvey murine sarcoma virus

A normal human gene homologous to the p21 ras oncogene of Harvey murine sarcoma virus induced oncogenic transformation and high p21 ras levels in murine fibroblasts when this gene was ligated to a control element (the long terminal repeat) from a murine or feline retrovirus. These results indicate that high levels of a gene product encoded by a normal human oncogene can induce tumorigenic transformation.