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In page Charles Claude Guthrie:

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Guthrie collaborated in his work on vascular surgery with French physician Alexis Carrel, who won the 1912 Nobel Prize in Physiology or Medicine. Arguments were made that the primary credit for this work should have gone to Guthrie rather than Carrel.[1][2] However, Guthrie's head transplant experiments likely prevented his Nobel Prize candidacy status.[citation needed]