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vegetation
>
dissociate ribosome
游离核糖体
(free ribosomes)
在蛋白质合成的全过程中, 结合有mrna的核糖体都是游离存在的(实际上是与细胞骨架结合在一起的),不与内质网结合。这种核糖体之所以不与内质网结合, 是因为被合成的蛋白质中没有特定的信号,与核糖体无关。