4215
5 microU / l thyrotropin : 75 % ( 1974 ) , 45 % ( 1977 ) and 20 % ( 1980 ) .
 thyrotropin
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 thyrotropin