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A Book Review: An Elegant Defense: The Extraordinary New Science of the Immune System: A Tale in Four Lives

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Matt Richtel is a terrific writer. His book on immune system is titled: An Elegant Defense: The Extraordinary New Science of the Immune System: A Tale in Four Lives. 
In my childhood, my parents taught me the very basics of our immune system, like I have a large number of tiny soldiers inside my body that fight with many viruses, bacteria and other pathogens to protect me. They told me that when I get injured, like a small cut on finger, it is these tiny soldiers come and repair the wounded area. I passed the similar knowledge to my son when he was younger. 
That's about it. That's what I knew as I played soccer in the mushy mud, cricket under the scorching sun, kabadi in monsoon rain, while hopping from tree to rooftop back to another tree with hand made slingshot, jumping on reddish brick or slippery grass.  In subsequent years, schooling taught me a bit more, like the B and T Cells, antigens, antibody, how vaccine works, etc. Also, I learnt how having good eating habits and d…