umbilical vesicle
英 [ʌmˈbɪlɪkl ˈvesɪkl]
美 [ʌmˈbɪlɪkl ˈvesɪkl]
网络 脐囊
英英释义
noun
- membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
美 [ʌmˈbɪlɪkl ˈvesɪkl]
网络 脐囊
noun