in the brain that alters permeability, restricting the passage of some chemical substances and microscopic objects from the bloodstream into the neural tissue, while allowing other substances to pass into the brain. for example, the blood-brain barrier restricts the passage of bacteria , red-blood cells...
introduction systems sample preparation systems stackers back consumables browse consumables by technology atomic spectroscopy consumables chromatography consumables molecular spectroscopy consumables all consumables: application packs and starter kits autosampler supplies bulbs & lamps burner systems cells...