“这是一个很好用的模型，因为你只要看着老鼠的皮毛颜色就可以判断环境是否对它的基因表达产生了影响，”Chong说。

"It's a good model to use because you can tell whether a mouse's environment is affecting the expression of its genes just by looking at its coat colour," says Chong.

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在这项研究中，她和她的同事对老鼠进行辐射并使用了用于化学疗法中的药品，然后监测老鼠皮毛颜色的变化以及其干细胞的状态。

For this study, she and her colleagues exposed mice to radiation and drugs used in chemotherapy, then monitored changes in the color of their fur as well as the status of their stem cells.

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在动物园里见到老虎，你可能认为它们的皮毛颜色亮丽，很容易被发现，但是在它们所生活的丛林里和草地上，老虎是很难被发现的。

If you see a tiger in the zoo, you may think its coat is brightly collared and easily seen, but in the jungles and grassland where it lives, a tiger is hard to see.

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