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The treatment for pernicious anemia was first devised by George Whipple who bled dogs to make them anemic and then fed them various substances to see what (if anything) would make them healthy again. He discovered that ingesting large amounts of liver seemed to cure the disease. George Minot and William Murphy then set about to chemically isolate the curative substance and ultimately were able to isolate the vitamin B12 from the liver. For this, all three shared the 1934 Nobel Prize in Medicine. As a result, pernicious anemia is now treated with either vitamin B12 injections, or large oral doses of vitamin B12, typically between 2 and 4 mg daily.
Maurice Beddow Bayly, an anti-vaccinationist and anti-vivisectionist, campaigned against the use of liver therapy, having failed to recognise the nature of the disease (despite reciting the necessary information).
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