Brain capillary endothelial cells forming the bloodâbrain barrier are polarised and possess distinct transport proteins in the luminal and abluminal plasma membranes. This illustration depicts a model describing some of these transporters.
metalanguage. A language used to describe another language.
Rng (algebra) In mathematics, and more specifically in abstract algebra, a rng (or pseudo-ring or non-unital ring) is an algebraic structure satisfying the same properties as a ring, without assuming the existence of a multiplicative identity.