a: pathogen ~
b: a truck runing towards you
What:
"A pathogen is like a truck runing towards you, if you don't do something its going to run you over so what does the immune system do? It throws arrows at the truck, literally," he says. Although most of those arrows won't have an effect, "the one likely arrow that will hit the tire will stop the truck."
Useful?
Writer: Becca Aaronson
LCC:
Where:
Date: Feb 2 2015 10:35 AM
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