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Intra - and inter - day recovery and RSD are close to 100 % and less than 10 % , respectively , for all investigated thiopurines .
 Chemical: thiopurines
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: thiopurines