And to think some people find the sciences uninteresting, or even boring! Why, if that doesn't knock off your socks and curl your hair, you don't have a pulse!
Okay, you want to know the interesting part? The mice don't need norepinephrine to survive after they are born. So if you can come up with a drug that blocks the converting enzyme, you have a possible treatment for addiction, that is free of side-effects.