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桑椹胚
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桑椹胚
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理学
桑椹胚
释
morula
桑椹胚
在动物胚胎发育的早期阶段,受精卵经过几次分裂,形成的由16个细胞组成的细胞团。因其形态与“桑葚”相似,故而得名。
Biology
morula
桑椹胚
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