单词：neural tube
neural tube的用法和样例：
例句
- These are not derived from the neural crest, instead an outpouching of the neural tube generates the optic cup which, in turn, forms the retina.不过视网膜上皮的黑色素细胞是其中的例外，它们并非由神经脊产生，而是在神经管外囊生成的视杯产生。
单词：neural tube 相关文章
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