When the blood in a man's body becomes fouled, it may be possible to remove and wash it, like linen. A remarkable device to accomplish this is being perfected by Dr. John J. Abel, distinguished pharmacologist of Johns Hopkins University. It is, in effect, an artificial kidney, an external laundry for the blood. The purpose of the apparatus is to extract foreign substances and mineral poisons from the circulation by tapping one of the large arteries, passing the blood through a purifier, and returning it to the heart by reinjection in a vein.
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