Transplants: Making Progress

Scampering and wagging her tail, the brown and white dog on the movie screen seemed nothing more than a picture of normal canine happiness. But to the meeting of the American College of Surgeons, the happy-go-lucky mutt was of signal significance. Within her chest was another dog's heart, transplanted by Dr. Richard R. Lower of the Medical College of Virginia more than a year before. She and another pup had not only survived with substitute hearts, but they were able to function normally—even to the extent, in the brown and white dog's...

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