2142
Firstly , after characterization of the model , male Wistar rats received a 0 . 75 % adenine - enriched diet for 8 , 14 , or 16 days to obtain various degrees of renal failure .
 Chemical: adenine
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: adenine