Search Results: "Cowpox"

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• 04:36 Popular

  How Do Vaccines Work? - Kelwalin Dhanasarnsombut

  819 views / 0 likes - added 8 years ago

  View full lesson: http://ed.ted.com/lessons/how-do-vaccines-work-kelwalin-dhanasarnsombut The first ever vaccine was created when Edward Jenner, an English physician and scientist, successfully injected small amounts of a cowpox virus into a young boy to

• 10:31 Popular

  This Is How Your Body Builds Immunity

  1,471 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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