Using these partial models, they can study things like cell signalling, or even the formation of the primitive streak - the crucial thread of cells which guides the process called gastrulation.

使用这些部分模型，他们可以研究细胞信号传导，甚至原始条纹的形成 - 细胞的关键线程，它指导称为原肠胚形成的过程。