21. There is no current explanation for how these charged molecules permeate the blood-brain barrier . 22. Once there, it encounters the blood-brain barrier , one of the brain's most important protections. 23. The blood-brain barrier , a thin membrane, is effective at keeping out most foreign bodies. 24. All brain capillaries of the blood-brain barrier structures have glucose transporters ( GLUT1 ). 25. As a tertiary amine, Laudanosine is unionised and readily crosses the blood brain barrier . 26. Thirteen classes of compounds cross the blood-brain barrier , Korth said. 27. They are large proteins that do not pass the blood brain barrier , he said. 28. Apigenin readily crosses the blood-brain barrier and has not demonstrated toxicity at high doses. 29. It can also cross the blood brain barrier intact, and register pharmacological effects directly. 30. Rather than trying to manipulate the blood-brain barrier , this treatment vaults right over it.