Term Name:	lung saccule
Synonyms:
Definition:	Primitive gas exchange portion of the lung composed of type I and type II cells[GO].
Ontology:	Uberon Ontology [UBERON:0000116]

Relationships

is part of:	alveolus of lung
has parts:	alveolar primary septum alveolar secondary septum
is a type of:	endoderm-derived structure organ part