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Title: Great for all ages
Review: I read this book for the first time when I was 3 or 4 and adored it. I explained to all of my friends how vaccines worked (because after it knows about the threat your immune system can build an to fight the real virus). It has fun and accessible metaphors.However, don't assume that this is just a kid's book! I'm now a medical student, and I find this book useful to explain immunology to my classmates and patients. It is full of accurate and detailed information.
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