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The existence of this hormone has been known since 1906 , when scientists first started isolating it , and since the 1980s , a recombinant version of the hormone known as Epogen or Betapoietin has been available for use in medical treatment .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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