a: blood brain barrier ~
b: moat
What:
"The blood-brain barrier is like the moat outside a castle, preventing harmful invaders from entering."
Useful?
Writer: Amanda Robb
LCC:
Where:
Date: Mar 21 2017 8:07 PM
# 11080 Critique Analogy
"The blood-brain barrier is like the moat outside a castle, preventing harmful invaders from entering."