As a general rule, the cells of a multicellular organism all contain the same set of genes.

一般来说，多细胞生物的细胞中含有一套相同的基因。

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Since, in a multicellular organism, different cells need different genes to be active, such regulation is vital.

由于在多细胞有机体中，不同的细胞需要借助不同的基因以激活自身，所以这种调控至关重要。

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Programmed cell death (PCD) is a cell death process that is a normal part of the life cycle of a multicellular organism.

细胞程序性死亡是多细胞有机体生命周期中正常的组成部分，细胞程序性死亡过程的存在对生物体是一种保护机制。

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The university's Schaap laboratory studied a simple multicellular organism, Dictyostelium, in which motile cells (those which can move spontaneously) differentiate into two immobile cell types: stalk cells and spores.

BBC: Embryonic cells