Answer:
d. white blood cells
Explanation:
It is the white blood cells that have the least tendency to cross the blood- brain barrier.
Blood- brain barrier is psychological barrier and restricts substances that circulate into the blood from crossing over the central nervous system.
Water, glucose as well as sodium ions can easily cross the barrier. As these are good for body supply energy to the brain.
Wym there is no question or statements.
Answer:
E
Explanation:
This is because all steps from A-D are important to obtain an accurate result
Answer: 4) Concentrate it
Explanation:
