allantoic
/ˌælənˈtoʊɪk/
adjective
- Relating to the allantois, a membrane in the embryos of reptiles, birds, and mammals that helps with gas exchange and waste storage.
- Allantoic blood vessels connect the embryo to the placenta in mammals.
- The allantoic membrane plays a key role in the development of the chick embryo.
- Scientists studied the allantoic fluid to understand nutrient transport.