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Rat collapsing from fatigue after hard run in exercise cage.

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  • Date: 1946-10
  • Physical Dimensions: B/W PRINT
  • Subject Keywords: Medicine, Diseases, 1940s
  • Publisher: TimeLife
  • Usage: For personal non-commercial use only
  • Provider: LIFE
  • Photographer: Bernard Hoffman
  • Original ID: TimeLife_image_667582
  • Credits: LIFE
  • Copyright: © Time Inc.
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