hypoblast
/ˈhaɪpoʊˌblæst/
noun
- The inner layer of cells in an early embryo that helps form structures such as the yolk sac and the lining of the gut.
- The hypoblast is one of the first cell layers to form after fertilization.
- Scientists study the hypoblast to understand how embryos organize their tissues.
- During early development, the hypoblast gives rise to the yolk sac.
Antonyms