参考词典中vitelline sac的常规释义:
基本释义
- 卵黄囊
英英解释
1个名词解释
- membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional
[同] umbilical vesicle, vesicula umbilicus, vitelline sac, yolk sac
点击查看……- membranous structure that functions as the circulatory system in mammal embryos until the heart becomes functional







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