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  This Is How Your Body Builds Immunity

  1,474 views / 0 likes - added 4 years ago

  We encounter bacteria, viruses and parasites all the time, but how exactly does our immune system kill these dangerous pathogens? Subscribe to Seeker! http://bit.ly/subscribeseeker Watch more Human! http://bit.ly/HUMANplaylist Visit our shop at http://sho

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