• The results showed that, the digestive canal initiated from the gastrocoele, which was formed by invagination at gastrula stage.

    结果表明单环消化道起源于胚期内陷而成的原肠腔;

    youdao

  • The results showed that, the digestive canal initiated from the gastrocoele, which was formed by invagination at gastrula stage.

    结果表明单环消化道起源于胚期内陷而成的原肠腔;

    youdao

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