OBO ID: ZFA:0005943

Term Name:	perivitelline fluid		Search Ontology:
Synonyms:
Definition:	Extraembryonic fluid that fills the space between the embryo and the chorion. Provides mechanical cushion, defense from pathogens and helps maintain osmotic balance. (1)
Appears at:	Zygote:1-cell (0.0h-0.75h)
Evident until:	Pharyngula:High-pec (42.0h-48.0h)
References:
Ontology:	Anatomy Ontology