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" "The similarity between them is not the taxonomic key to some other, deeper, affinity, and our recognizing its existence marks the end, not the inauguration, of a train of thought.
Sir Peter Medawar (February 28, 1915 – October 2, 1987) was a Brazilian-born English scientist best known for his work on how the immune system rejects or accepts organ transplants. He was co-winner of the 1960 Nobel Prize in Physiology or Medicine with Sir Frank Macfarlane Burnet.
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