a:  Stem cells ~
b:  little kids
What:  
"Stem cells are like little kids who, when they grow up, can enter a variety of professions," Dr. Marc Hedrick of the UCLA School of Medicine says. "A child might become a fireman, a doctor or a plumber, depending on the influences in their life -- or environment. In the same way, these stem cells can become many tissues by making certain changes in their environment."
Useful?
Writer:  Dr. Marc Hedrick
LCC: 
Where:
Date:   Mar 2 2014  1:54 PM
# 5179 Critique Analogy
