Specializing in Canine and Feline Neurology and Neurosurgery for over 35 years

blood-brain barrier (BBB)

A specialized system of capillary endothelial cells as well as certain processes from astrocytes that strictly limits transport into the brain through both physical (tight junctions) and metabolic (enzymes) barriers.  Certain microscopic objects (e.g. bacteria, toxins, etc.) are restricted while others essential for brain function (e.g. oxygen, glucose) are allowed to pass.

Related Words

astrocyte ; bacteria ; blood ; brain ; toxin