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      Knowledge is Power

      Scientific American November 1996

      Immunity and the Invertebrates

      The fabulously complex immune systems of humans and other mammals evolved over hundreds of millions of years -- in sometimes surprising ways

      • By Gregory Beck, Gail S. Habicht on November 1, 1996

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      More in the November 1996 issue of Scientific American
      • A Guide to Computer Dating
      • Can China Feed Itself?
      • Global Climatic Change on Mars
      View Full Contents
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