Linked from
The 70 pages that link to Cell membrane, each with the reason it gives.
ProtozoaRelated: It regulates exchange with the surroundings, especially in aquatic protozoa.
BraneBroader topic: Membranes are the two-dimensional case behind the name of the M-theory M2-brane.
Cell Physiological PhenomenaRelated: It regulates exchange and helps cells detect external signals.
Erwin NeherNarrower topic: Patch-clamp recordings isolate a small area of this boundary.