Type the correct answer in the box. Spell the word correctly. Read about the biotechnology R&D career described and fill in the blank.
Anastasia works in a laboratory at a large research hospital. The organisms she studies are too tiny to be seen without a microscope. Anastasia is a

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

is in the form atp or adenosine triphosphate