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[Why You Are Still Alive – The Immune System Explained] (Viewer #355,749)

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4 Comments

  1. Thanks, H.

    Geez, I was never taught all that complexity.

    Granted, it was only high school back in the old days, but all they ever said was white cells attack invaders, and T-cells did something too. (I wasn’t paying attention — there were girls in fuzzy sweaters!)

    Sometimes it was conveyed that messager chemicals would be released in the blood to release more defenses, but nothing approaching the clarity and complexity of this video.

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