一种新的会随着时间改变颜色的蛋白质将有助于研究者们监视完整的有机体中基因表达的活化和抑制。科学家们使用从一种荧光水母中提取的绿色荧光蛋白，或者是来自珊瑚虫类物种的红色荧光蛋白作为标记来观察细胞中发生的种种变化。Alexey Terskikh及其同事培养出这种红色蛋白的一 A new protein that changes color over time will help researchers monitor the activation and repression of gene expression in intact organisms. Scientists use green fluorescent protein extracted from a fluorescent jellyfish, or red fluorescent protein from coral species, as markers to see what happens in cells. Alexey Terskikh and colleagues develop one of these red proteins