The adult human body contains about five quarts of blood. If more than half of this is removed at one time, the owner usually dies. Scientists in Russia claim to have removed the entire blood supply from animals, chemically "washed" it, replaced it without apparent injury. Scientists everywhere would consider this an extremely dangerous experiment for humans. Yet it might be possible to detour the bloodstream so that only a few ounces would be outside the body at any one time, yet so that all of it would pass sooner or later through the...
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