Blood-brain barrier: evidence for active cation transport between blood and the extracellular fluid of brain.
D000818:Animals; D001693:Biological Transport, Active; D001812:Blood-Brain Barrier; D002415:Cats; D002540:Cerebral Cortex; D002946:Cisterna Magna; D003956:Dialysis; D004285:Dogs; D005110:Extracellular Space; D008274:Magnesium / Q000097:blood / Q000134:cerebrospinal fluid*; D011188:Potassium / Q000097:blood / Q000134:cerebrospinal fluid*
D008274:Magnesium; D011188:Potassium