TERM: Description of glossary term.
Fish related glossary
lumen
The passage or cavity of a tubular organ, or simply the space occupied by the membrane of a cell. Often applied more generally to mean an opening or "window.".
Riferimento
Barlow, George. 2002. "The Cichlid Fishes (Nature's Grand Experiment in Evolution)". Perseus Publishing. 352 - (ffm03927)