Stage Range: NF stage 25 to undefined
Definition: Rapidly proliferating mass of cells at the caudal extremity of the embryo. Its formation is reflected in a caudal carving of the posterior portion of the archenteric canal at NF stage 22. With its further outgrowth, the postanal gut primordium becomes stretched. Its lumen is in broad communication with the hindgut at NF stage 25.
Component Anatomy Items:
References: NCBO BioPortal, Ontology Lookup Service