The internal volume enclosed by the membranes of a particular organelle; includes the volume enclosed by a single organelle membrane, e.g. endoplasmic reticulum lumen, or the volume enclosed by the innermost of the two lipid bilayers of an organelle envelope, e.g. nuclear lumen. [ GOC : mah GOC : jl ]
Term information
Term relations
- membrane-enclosed lumen and part of some organelle