Vaccine

human body

2 Min

Created at 10 / 2013

9.8

10.0 Informative

9.6 Entertaining

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By Piled Higher and Deeper (PHD Comics)

2 Videos

Ponder. Hypothesize. Discover. PHD illustrates and communicates the ideas, stories and... Read More

What is a Vaccine? The definition of a biological act that provides active immunity to diseases by stimulating the immune system. Watch this video and learn all the facts about how it affects the human body.

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