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      Scientific American June 1990

      Blood Feud

      Researchers begin fighting back against animal-rights activists

      • By Deborah Erickson on June 1, 1990

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      More in the June 1990 issue of Scientific American
      • 50 and 100 Years Ago: June 1990
      • Dust Busters
      • Essay: Of Ladders, Cycles and Economic Growth
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