As developmental and cell biologist Valentina Greco stood on a stage in Philadelphia last December, candid time-lapse shots of some of the body’s most elusive cells flashed behind her in quick succession. These stem cells, photographed in a living mouse, were caught in the acts of dividing, differentiating, and interacting with neighbors. Such videos are more than just captivating cellular cinema—they could reveal key details about how stem cells work.

中文翻译：

---

内部工作：显微镜照亮了正在运行的干细胞[细胞生物学]

去年12月，发育和细胞生物学家瓦伦蒂娜·格列柯（Valentina Greco）站在费城的一个舞台上，身体中一些最难以捉摸的细胞的坦率延时拍摄迅速地在她身后闪过。这些干细胞在活老鼠拍照，被捉住了分裂，分化，并与邻居联系的行为。这样的视频不仅仅是吸引人的蜂窝电影，它们还可以揭示有关干细胞如何工作的关键细节。