establishment of blood-brain barrier
Establishment of the barrier between the blood and the brain. The cells in the brain are packed tightly together preventing the passage of most molecules from the blood into the brain. Only lipid soluble molecules or those that are actively transported can pass through the blood-brain barrier.
GO:0048468
cell development
is_a
GO:0007417
central nervous system development
part_of
establishment of BBB
exact
establishment of blood/brain barrier
exact