Term: kidney lumen
Name: kidney
Synonyms: mesonephros
Definition: Cavitated compound organ located in the pleuroperitoneal cavity where hematopoiesis and filtering of blood occur.
Ontology: Anatomy Ontology [ZFA:0000529]

Name: lumen
Synonyms:
Definition: Anatomical space within a tubular organ, duct, or vessel.
Ontology: Anatomy Ontology [ZFA:0005930]