作者采用细胞培养技术和同位素技术,研究了硒对人羊膜细胞和猴肾细胞的核酸合成的影响。将细胞悬液和不同浓度的亚硒酸钠溶液共同孵育24小时后,加入氚标记的DNA和RNA合成的前身物质,通过测定细胞内同位素量,可推测细胞合成DNA和RNA的速度。结果表明,硒能促进细胞的DNA和RNA合成,并且是细胞生长所必需的微量元素。 The authors used cell culture techniques and isotope techniques to study the effect of selenium on human amniotic membrane and monkey kidney cell nucleic acid synthesis. After incubating the cell suspension with different concentrations of sodium selenite for 24 hours, the precursors of tritium-labeled DNA and RNA were added and the amount of intracellular isotopes was measured to estimate the rate of cell DNA and RNA synthesis. The results show that selenium can promote cell DNA and RNA synthesis, and is the necessary trace elements for cell growth.