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In 1816 , François Magendie discovered that dogs fed only carbohydrates ( sugar ) , fat ( olive oil ) , and water died evidently of starvation , but dogs also fed protein survived - identifying protein as an essential dietary component .
 François Magendie
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 François Magendie